🕷️ Crawler Inspector

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Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 50 (from laksa167)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa050.int.ahrefs:8124/' \
  -H 'Content-Type: text/plain' \
  -H 'X-ClickHouse-Database: crawler3' \
  -H 'Authorization: Basic YXBpOg==' \
  -d 'SELECT getAhrefsURLFromUnparsed(src_unparsed) AS found_url, ifNull(toUnixTimestamp(download_stamp), 0) AS crawl_time, ifNull(toUnixTimestamp(props_url_first_seen), 0) AS first_indexed_time, download_http_code AS http_code, src_unparsed AS src_unparsed, src_root_hash AS src_root_hash, history_drop_reason AS history_drop_reason, meta_title AS meta_title, meta_descriptions AS meta_descriptions, attrs_boilerpipe_text AS attrs_boilerpipe_text, attrs_markdown AS attrs_markdown, attrs_readable_markdown AS attrs_readable_markdown, meta_canonical AS meta_canonical FROM crawler3.page_info_local FINAL PREWHERE (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://www.verywellhealth.com/pcr-vs-rapid-test-for-covid-19-5210788\')), getAhrefsUnparsedNoserviceFromURL(\'https://www.verywellhealth.com/pcr-vs-rapid-test-for-covid-19-5210788\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/www.verywellhealth.com\/pcr-vs-rapid-test-for-covid-19-5210788","crawl_time":1776271946,"first_indexed_time":1639655419,"http_code":200,"src_unparsed":"com,verywellhealth!www,\/pcr-vs-rapid-test-for-covid-19-5210788 s443","src_root_hash":"5681562863987870850","history_drop_reason":null,"meta_title":"PCR or Rapid Test: Which Is Better?","meta_descriptions":["Learn the pros and cons of two COVID-19 test options: PCR and rapid test. Find out when to get them and which one is best suited for you."],"attrs_boilerpipe_text":"Key Takeaways\nPCR tests are very accurate and can find the virus even in people without symptoms.\nRapid tests can be done at home and show results in minutes.\nIt's important to follow instructions closely when using a rapid test.\nTwo types of\nCOVID-19\ntests, the rapid antigen test and the\npolymerase chain reaction (PCR) test\n, are available in the United States. The PCR typically relies on lab testing and is still considered the \"gold standard\" for accuracy.\nThe rapid tests are commonly\nat-home tests\n, with new options that have made testing easier. Not every test is created equal, though, and there are pros and cons to each type of COVID-19 test.\nIn January 2022, the federal government started a program that allowed you to order free rapid tests through the United States Postal Service. In March 2024, this program was suspended.\nThis article discusses the types of COVID tests and how they are used. It offers information to help you choose an at-home test, as well as how to determine when a healthcare provider or lab may be needed to ensure access to some tests and results.\nCarol Yepes\/Getty Images\nFDA Warns About Counterfeit COVID-19 Test Kits\nThe Food and Drug Administration warns people to avoid counterfeit over-the-counter (OTC) COVID-19 diagnostic tests that are not authorized by the FDA. Signs that a test may be counterfeit include the following:\nBox label, trade name, or printed instructions for use look different from the authorized labeling found on the \nFDA website\nPoor print quality of images or text on the packaging or instructions\nMissing information on the packaging label (such as the lot number, expiration date, or barcode or QR codes)\nGrammatical or spelling errors on labels\nPolymerase chain reaction (PCR) tests\nare considered the \"gold standard\" for COVID-19 tests. PCR tests are a type of nucleic acid amplification test (NAAT) that takes a small sample of genetic material and copies it multiple times. This process is called amplification.\nAmplifying the genetic material makes detecting even the smallest amount of a virus easy. PCR tests can also differentiate between different virus variants—or strains.\nSince these tests examine microscopic bits of a virus's genetic material, they are highly reliable—often close to 100%.\nThe drawback of the PCR process is the time it takes and the fact that lab analysis is required to get results.\nThe average turnaround time for PCR test results is two to three days after the lab receives your sample.\nThere are also a few options for NAATs that can be used at outpatient clinics and can provide a result in about 20 minutes. These tests look for nucleic acid from the virus instead of antigen.\nPros\nHighly accurate\nCan detect virus in asymptomatic people\nCons\nSample must be sent to a lab\nLengthy turnaround time (3-7 days)\nExpensive\nHigher false positive rate\nRapid Test\nRapid antigen tests\n look for pieces of the viral proteins from the SARS-CoV-2 virus (\nantigens\n) that cause COVID-19 rather than genetic material (nucleic acid from the virus). These tests are quick and are often used to detect other viruses that cause illnesses like the flu,\nrespiratory syncytial virus (RSV)\n, and\nsexually transmitted infections (STIs)\n.\nThe FDA has approved several rapid antigen tests for COVID-19 because they offer a more simple and accessible option for testing. They can also produce results within minutes.\nHow to Use a Rapid Test\nThese are general instructions on COVID rapid test use. Each test is different, so it's important to follow the instructions provided with the self-test you're taking.\nDisinfect the surface where you plan on opening the testing kit.\nWash your hands with soap and water for at least 20 seconds.\nOpen testing materials only when you're ready to use them.\nFollow manufacturer instructions for collecting your nasal (or saliva) sample and completing the test.\nWait the instructed amount of time before reading your test results.\nDo not reuse your testing materials.\nThrow away all testing materials and disinfect all surfaces.\nAntigen tests are not as sensitive as PCR-based or other nucleic acid amplification tests.\nPCR tests can detect the COVID-19 virus nearly 100% of the time. Antigen tests can only detect the virus in about 80% of people with\nCOVID-19 symptoms\n.\nThe accuracy is much lower in people who take the test when they have no symptoms.\nPros\nHome-based\nFast results (10-30 minutes)\nCheaper than a PCR test\nGood for repeated testing\nCons\nUser error can effect results\nHigher false negative rate\nDoesn't work well if you don't have symptoms\nChoosing PCR vs. Rapid Test\nThere is no right or wrong answer when it comes to which COVID-19 test is best. There is a time and place for each type, and which one you choose will depend on your situation and symptoms.\nFor example, if you are sick and wondering whether your symptoms could be caused by COVID-19, a rapid test can give you that answer quickly. That's helpful because it would allow you to isolate yourself from other people to help reduce the spread of the virus.\nBoth PCR and antigen testing use samples of cells collected from your nose, mouth, or throat. PCR sample collections can be done at home but have to be sent to a lab for results. Rapid antigen tests can be done completely at home.\nHowever, if you do not have symptoms or you're simply taking a test before an event to make sure that you're not sick, a rapid antigen test may not be able to give you the most accurate result.\nPeople who are symptomatic who need testing before a medical procedure, people who are testing because they were\nexposed\nto someone with COVID-19, or people who remain sick despite numerous negative rapid tests are the best candidates for PCR testing. While this type of testing takes longer and is more expensive than rapid tests, it can provide you with the most accurate result.\nPCR tests are generally considered more accurate than rapid tests, but rapid tests have benefits that PCR tests do not have—for example, they provide results faster and for a lower cost. The test that is right for you will depend on why you are taking the test and how soon you need to get results.\nWhen Should You Test?\nWhen you should test will depend on whether or not you are experiencing COVID-19 symptoms.\nIf you have COVID symptoms:\nTake a PCR test if you plan to use only one test. An antigen test is reliable for a positive result, but a negative result is more accurate with a PCR. If your rapid antigen test is negative, take another test in 48 hours or use a PCR test as soon as you can.\nIf you don't have COVID symptoms:\nWait at least five days from when you were exposed before taking either a PCR or antigen test. The same limitations and next-test recommendations apply (i.e., a negative antigen test is less reliable). If a second antigen test is negative after 48 hours, wait another 48 hours and test again.\nFor people testing\nafter a COVID infection\n, the CDC recommends antigen tests. You do not need to take a test if you have no symptoms and it's still within 30 days of your last positive test.\nPeople may choose take a COVID test before traveling, or attending family gatherings and public events. The recommendation from the Centers for Disease Control and Prevention is to do these tests as close to the event time as possible, within one or two days.\nWhere to Find a Test\nThere are several ways to access a COVID-19 test. They include:\nBuying FDA-approved kits (either online or at retail stores) for use at home\nFinding a test site, using the\nlocator tool\nfrom the Centers for Disease Control and Prevention. Many pharmacies, including CVS and Walgreen's, offer COVID tests.\nCheck with your healthcare provider about COVID tests, too. They may offer testing, including antigen and PCR tests. If you have insurance, check your coverage to see what types of tests are covered since the end of the COVID public health emergency.\nStocksy\/Luis Velasco\nKeep in mind that you can collect samples for both PCR and rapid antigen tests at home, but you can only get immediate results with a rapid antigen test. It's possible (but unlikely) to get PCR test results in a few hours if you have direct access to a lab and there is no one else waiting.\n9 Sources\nVerywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our\neditorial process\nto learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.\nBy\nRachael Zimlich, BSN, RN\nZimlich is a critical care nurse who has been writing about health care and clinical developments for over 10 years.\nWas this page helpful?\nThanks for your feedback!\nWhat is your feedback?","attrs_markdown":"[Skip to content](https:\/\/www.verywellhealth.com\/pcr-vs-rapid-test-for-covid-19-5210788#skip-to-content)\n\nMenu\n\n- [Health A-Z](https:\/\/www.verywellhealth.com\/health-a-z-4014770)\n  - [Colorectal Cancer](https:\/\/www.verywellhealth.com\/colon-cancer-4014742)\n  - [Arthritis](https:\/\/www.verywellhealth.com\/arthritis-overview-4582013)\n  - [Type 2 Diabetes](https:\/\/www.verywellhealth.com\/type-2-diabetes-overview-4581874)\n  - [Digestive Health](https:\/\/www.verywellhealth.com\/digestive-health-4141198)\n  - [Multiple Sclerosis](https:\/\/www.verywellhealth.com\/multiple-sclerosis-overview-4581925)\n  - [Skin Health](https:\/\/www.verywellhealth.com\/skin-health-4014649)\n  - 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[Long COVID](https:\/\/www.verywellhealth.com\/covid-19-long-haulers-long-term-effects-5116397)\n  - [COVID-19 Vaccines](https:\/\/www.verywellhealth.com\/covid-19-coronavirus-vaccine-5093230)\n- [Mononucleosis](https:\/\/www.verywellhealth.com\/mononucleosis-5092911)\n- [Meningitis](https:\/\/www.verywellhealth.com\/meningitis-5092811)\n- [Lyme Disease](https:\/\/www.verywellhealth.com\/lyme-disease-5092808)\n- [Respiratory Infections](https:\/\/www.verywellhealth.com\/respiratory-infections-4013495)\n- [Foodborne Infections](https:\/\/www.verywellhealth.com\/foodborne-infections-4013041)\n- [Rare Infections](https:\/\/www.verywellhealth.com\/rare-infectious-diseases-4013911)\n- [Travelers' Health](https:\/\/www.verywellhealth.com\/travelers-health-4013804)\n- [Zika Virus](https:\/\/www.verywellhealth.com\/zika-virus-4134441)\n- [More Infectious Diseases](https:\/\/www.verywellhealth.com\/more-infectious-diseases-4013247)\n\n[View More](https:\/\/www.verywellhealth.com\/infectious-diseases-4014700)\n\nTools & Resources\n\n- [Thyroid Test Analyzer](https:\/\/www.verywellhealth.com\/thyroid-test-analyzer-8647820)\n- [Doctor Discussion Guides](https:\/\/www.verywellhealth.com\/doctor-discussion-guides-4179090)\n- [Hemoglobin A1c Test Analyzer](https:\/\/www.verywellhealth.com\/a1c-test-analyzer-8647852)\n- [Lipid Test Analyzer](https:\/\/www.verywellhealth.com\/lipid-test-analyzer-8647856)\n- [Complete Blood Count (CBC) Analyzer](https:\/\/www.verywellhealth.com\/complete-blood-count-cbc-analyzer-8647862)\n\n- [About Us](https:\/\/www.verywellhealth.com\/about-us-5180305)\n- [Editorial Process](https:\/\/www.verywellhealth.com\/verywell-editorial-process-4777042)\n- [Medical Review Board](https:\/\/www.verywellhealth.com\/meet-our-medical-expert-board-11762003)\n\nVerywell Health's content is for informational and educational purposes only. Our website is not intended to be a substitute for professional medical advice, diagnosis, or treatment.\n\nⒸ 2026 People Inc. — All rights reserved\n\nAt-Home COVID Test Guide\n\nAt-Home COVID Test Guide\n\n- [At-Home Test Accuracy](https:\/\/www.verywellhealth.com\/are-at-home-covid-tests-accurate-enough-5210762)\n- [PCR vs. Rapid Tests](https:\/\/www.verywellhealth.com\/pcr-vs-rapid-test-for-covid-19-5210788)\n- [Positive Result: What to Do Next](https:\/\/www.verywellhealth.com\/what-to-do-with-a-positive-at-home-covid-test-result-5210146)\n- [Retesting After Having COVID](https:\/\/www.verywellhealth.com\/retesting-after-having-covid-5216949)\n# PCR vs. Rapid Test for COVID-19: Which Should You Take?\nBy [Rachael Zimlich, BSN, RN](https:\/\/www.verywellhealth.com\/rachael-zimlich-rn-bsn-4798533)\n\nUpdated on February 17, 2026\n\nMedically reviewed by  [Jordana Haber Hazan, MD](https:\/\/www.verywellhealth.com\/jordana-haber-hazan-5216283)\n\nTable of Contents\n\nView All\n\nTable of Contents\n\n- [PCR Test](https:\/\/www.verywellhealth.com\/pcr-vs-rapid-test-for-covid-19-5210788#toc-pcr-test)\n- [Rapid Test](https:\/\/www.verywellhealth.com\/pcr-vs-rapid-test-for-covid-19-5210788#toc-rapid-test)\n- [Choosing a Test](https:\/\/www.verywellhealth.com\/pcr-vs-rapid-test-for-covid-19-5210788#toc-choosing-pcr-vs-rapid-test)\n- [When Should You Test?](https:\/\/www.verywellhealth.com\/pcr-vs-rapid-test-for-covid-19-5210788#toc-when-should-you-test)\n- [Where to Find a Test](https:\/\/www.verywellhealth.com\/pcr-vs-rapid-test-for-covid-19-5210788#toc-where-to-find-a-test)\n- Next in At-Home COVID Test Guide\n  [What to Do If You Get a Positive At-Home COVID-19 Test Result](https:\/\/www.verywellhealth.com\/what-to-do-with-a-positive-at-home-covid-test-result-5210146)\n\n### Key Takeaways\n- PCR tests are very accurate and can find the virus even in people without symptoms.\n- Rapid tests can be done at home and show results in minutes.\n- It's important to follow instructions closely when using a rapid test.\n\nTwo types of [COVID-19](https:\/\/www.verywellhealth.com\/coronavirus-covid-19-4799524) tests, the rapid antigen test and the [polymerase chain reaction (PCR) test](https:\/\/www.verywellhealth.com\/nucleic-acid-amplification-tests-3132631), are available in the United States. The PCR typically relies on lab testing and is still considered the \"gold standard\" for accuracy.\n\nThe rapid tests are commonly [at-home tests](https:\/\/www.verywellhealth.com\/covid-home-tests-5119404), with new options that have made testing easier. Not every test is created equal, though, and there are pros and cons to each type of COVID-19 test.\n\nIn January 2022, the federal government started a program that allowed you to order free rapid tests through the United States Postal Service. In March 2024, this program was suspended.\n\nThis article discusses the types of COVID tests and how they are used. It offers information to help you choose an at-home test, as well as how to determine when a healthcare provider or lab may be needed to ensure access to some tests and results.\n\n![Hands holding a rapid COVID-19 test.]()\n\n![Hands holding a rapid COVID-19 test.](https:\/\/www.verywellhealth.com\/thmb\/tPcDXJFEceypvtRYEG3cfy7YdM4=\/1500x0\/filters:no_upscale\\(\\):max_bytes\\(150000\\):strip_icc\\(\\)\/VWH-GettyImages-1331971219-a6a0859331a74d9fa2e916b633a47bd9.jpg)\n\nCarol Yepes\/Getty Images\n\n### FDA Warns About Counterfeit COVID-19 Test Kits\nThe Food and Drug Administration warns people to avoid counterfeit over-the-counter (OTC) COVID-19 diagnostic tests that are not authorized by the FDA. Signs that a test may be counterfeit include the following:\n\n- Box label, trade name, or printed instructions for use look different from the authorized labeling found on the [FDA website](https:\/\/www.fda.gov\/medical-devices\/coronavirus-covid-19-and-medical-devices\/home-otc-covid-19-diagnostic-tests)\n- Poor print quality of images or text on the packaging or instructions\n- Missing information on the packaging label (such as the lot number, expiration date, or barcode or QR codes)\n- Grammatical or spelling errors on labels\n## PCR Test\n[Polymerase chain reaction (PCR) tests](https:\/\/www.verywellhealth.com\/nucleic-acid-amplification-tests-3132631) are considered the \"gold standard\" for COVID-19 tests. PCR tests are a type of nucleic acid amplification test (NAAT) that takes a small sample of genetic material and copies it multiple times. This process is called amplification.\n\nAmplifying the genetic material makes detecting even the smallest amount of a virus easy. PCR tests can also differentiate between different virus variants—or strains. Since these tests examine microscopic bits of a virus's genetic material, they are highly reliable—often close to 100%.\n\nThe drawback of the PCR process is the time it takes and the fact that lab analysis is required to get results. The average turnaround time for PCR test results is two to three days after the lab receives your sample.\n\nThere are also a few options for NAATs that can be used at outpatient clinics and can provide a result in about 20 minutes. These tests look for nucleic acid from the virus instead of antigen.\n\nPros\n\n- Highly accurate\n- Can detect virus in asymptomatic people\n\nCons\n\n- Sample must be sent to a lab\n- Lengthy turnaround time (3-7 days)\n- Expensive\n- Higher false positive rate\n## Rapid Test\n[Rapid antigen tests](https:\/\/www.verywellhealth.com\/best-at-home-covid-test-5209818) look for pieces of the viral proteins from the SARS-CoV-2 virus ([antigens](https:\/\/www.verywellhealth.com\/what-is-an-antigen-5083801)) that cause COVID-19 rather than genetic material (nucleic acid from the virus). These tests are quick and are often used to detect other viruses that cause illnesses like the flu, [respiratory syncytial virus (RSV)](https:\/\/www.verywellhealth.com\/rsv-symptoms-treatments-770635), and [sexually transmitted infections (STIs)](https:\/\/www.verywellhealth.com\/can-i-get-an-std-blood-test-3132740).\n\nThe FDA has approved several rapid antigen tests for COVID-19 because they offer a more simple and accessible option for testing. They can also produce results within minutes.\n\n### How to Use a Rapid Test\nThese are general instructions on COVID rapid test use. Each test is different, so it's important to follow the instructions provided with the self-test you're taking.\n\n- Disinfect the surface where you plan on opening the testing kit.\n- Wash your hands with soap and water for at least 20 seconds.\n- Open testing materials only when you're ready to use them.\n- Follow manufacturer instructions for collecting your nasal (or saliva) sample and completing the test.\n- Wait the instructed amount of time before reading your test results.\n- Do not reuse your testing materials.\n- Throw away all testing materials and disinfect all surfaces.\n\nAntigen tests are not as sensitive as PCR-based or other nucleic acid amplification tests. PCR tests can detect the COVID-19 virus nearly 100% of the time. Antigen tests can only detect the virus in about 80% of people with [COVID-19 symptoms](https:\/\/www.verywellhealth.com\/how-long-does-covid-last-8547620). The accuracy is much lower in people who take the test when they have no symptoms.\n\nPros\n\n- Home-based\n- Fast results (10-30 minutes)\n- Cheaper than a PCR test\n- Good for repeated testing\n\nCons\n\n- User error can effect results\n- Higher false negative rate\n- Doesn't work well if you don't have symptoms\n## Choosing PCR vs. Rapid Test\nThere is no right or wrong answer when it comes to which COVID-19 test is best. There is a time and place for each type, and which one you choose will depend on your situation and symptoms.\n\nFor example, if you are sick and wondering whether your symptoms could be caused by COVID-19, a rapid test can give you that answer quickly. That's helpful because it would allow you to isolate yourself from other people to help reduce the spread of the virus.\n\nBoth PCR and antigen testing use samples of cells collected from your nose, mouth, or throat. PCR sample collections can be done at home but have to be sent to a lab for results. Rapid antigen tests can be done completely at home.\n\nHowever, if you do not have symptoms or you're simply taking a test before an event to make sure that you're not sick, a rapid antigen test may not be able to give you the most accurate result.\n\nPeople who are symptomatic who need testing before a medical procedure, people who are testing because they were [exposed](https:\/\/www.verywellhealth.com\/when-to-test-for-covid-8422718) to someone with COVID-19, or people who remain sick despite numerous negative rapid tests are the best candidates for PCR testing. While this type of testing takes longer and is more expensive than rapid tests, it can provide you with the most accurate result.\n\nPCR tests are generally considered more accurate than rapid tests, but rapid tests have benefits that PCR tests do not have—for example, they provide results faster and for a lower cost. The test that is right for you will depend on why you are taking the test and how soon you need to get results.\n\n## When Should You Test?\nWhen you should test will depend on whether or not you are experiencing COVID-19 symptoms.\n\n**If you have COVID symptoms:** Take a PCR test if you plan to use only one test. An antigen test is reliable for a positive result, but a negative result is more accurate with a PCR. If your rapid antigen test is negative, take another test in 48 hours or use a PCR test as soon as you can.\n\n**If you don't have COVID symptoms:** Wait at least five days from when you were exposed before taking either a PCR or antigen test. The same limitations and next-test recommendations apply (i.e., a negative antigen test is less reliable). If a second antigen test is negative after 48 hours, wait another 48 hours and test again.\n\nFor people testing **after a COVID infection**, the CDC recommends antigen tests. You do not need to take a test if you have no symptoms and it's still within 30 days of your last positive test.\n\nPeople may choose take a COVID test before traveling, or attending family gatherings and public events. The recommendation from the Centers for Disease Control and Prevention is to do these tests as close to the event time as possible, within one or two days.\n\n## Where to Find a Test\nThere are several ways to access a COVID-19 test. They include:\n\n- Buying FDA-approved kits (either online or at retail stores) for use at home\n- Finding a test site, using the [locator tool](https:\/\/testinglocator.cdc.gov\/) from the Centers for Disease Control and Prevention. Many pharmacies, including CVS and Walgreen's, offer COVID tests.\n\nCheck with your healthcare provider about COVID tests, too. They may offer testing, including antigen and PCR tests. If you have insurance, check your coverage to see what types of tests are covered since the end of the COVID public health emergency.\n\n![woman receiving covid test in pharmacy]()\n\n![woman receiving covid test in pharmacy](https:\/\/www.verywellhealth.com\/thmb\/_oh0ruC-rKKEJGciAEnjgvXaEWU=\/1500x0\/filters:no_upscale\\(\\):max_bytes\\(150000\\):strip_icc\\(\\)\/Health-Stocksy-3740634-ee1029112f6d42d08a2795385d670b03.jpg)\n\nStocksy\/Luis Velasco\n\nKeep in mind that you can collect samples for both PCR and rapid antigen tests at home, but you can only get immediate results with a rapid antigen test. It's possible (but unlikely) to get PCR test results in a few hours if you have direct access to a lab and there is no one else waiting.\n\nRead more:\n\n- [Health A-Z](https:\/\/www.verywellhealth.com\/health-a-z-4014770)\n- [Infectious Diseases](https:\/\/www.verywellhealth.com\/infectious-diseases-4014700)\n- [Coronavirus (COVID-19)](https:\/\/www.verywellhealth.com\/coronavirus-covid-19-4799524)\n\n9 Sources\n\nVerywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our [editorial process](https:\/\/www.verywellhealth.com\/verywell-editorial-process-4777042) to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.\n\n1. Centers for Disease Control and Prevention. [Testing for COVID-19](https:\/\/www.cdc.gov\/covid\/testing\/).\n2. United States Postal Service. [At-Home COVID-19 Tests](https:\/\/faq.usps.com\/s\/article\/At-Home-COVID-19-Test-Kits).\n3. Food and Drug Administration. [Counterfeit At-Home OTC COVID-19 Diagnostic Tests](https:\/\/www.fda.gov\/medical-devices\/coronavirus-covid-19-and-medical-devices\/counterfeit-home-otc-covid-19-diagnostic-tests#signs).\n4. Crozier A, Rajan S, Buchan I, et al. [Put to the test: use of rapid testing technologies for COVID-19](https:\/\/www.bmj.com\/content\/372\/bmj.n208). *BMJ.* February2021;372:n208 doi:10.1136\/bmj.n208\n5. Hafer N. [What’s the difference between a PCR and antigen COVID-19 test?](https:\/\/www.umassmed.edu\/news\/news-archives\/2021\/11\/whats-the-difference-between-a-pcr-and-antigen-covid-19-test\/). *UMass Chan Medical School.*\n6. Abbott. [COVID-19 Rapid Testing: Every Minute Counts](https:\/\/www.abbott.com\/corpnewsroom\/diagnostics-testing\/covid-19-rapid-testing-every-minute-counts.html).\n7. U.S. Food and Drug Administration. [At-home OTC COVID-19 diagnostic tests](https:\/\/www.fda.gov\/medical-devices\/coronavirus-covid-19-and-medical-devices\/home-otc-covid-19-diagnostic-tests).\n8. Infectious Disease Society of America. [IDSA Guidelines on the Diagnosis of COVID-19: Antigen Testing](https:\/\/www.idsociety.org\/practice-guideline\/covid-19-guideline-antigen-testing\/).\n9. U.S. Food and Drug Administration. [At-Home COVID-19 Antigen Tests-Take Steps to Reduce YourRisk of False Negative Results: FDA Safety Communication](https:\/\/www.fda.gov\/medical-devices\/safety-communications\/home-covid-19-antigen-tests-take-steps-reduce-your-risk-false-negative-results-fda-safety).\n\n![Rachael Zimlich]()\n\n![Rachael Zimlich](https:\/\/www.verywellhealth.com\/thmb\/9_k9bVFy3vMlyVzl3bN-HeFf6SE=\/144x144\/filters:no_upscale\\(\\):max_bytes\\(150000\\):strip_icc\\(\\)\/Rachael-Zimlich-1000-db09b152f8424b29a2ffa3d0123e917d.jpg)\n\nBy [Rachael Zimlich, BSN, RN](https:\/\/www.verywellhealth.com\/rachael-zimlich-rn-bsn-4798533)   \n Zimlich is a critical care nurse who has been writing about health care and clinical developments for over 10 years.\n\n[See Our Editorial Process](https:\/\/www.verywellhealth.com\/verywell-editorial-process-4777042)\n\n[Meet Our Medical Expert Board](https:\/\/www.verywellhealth.com\/meet-our-medical-expert-board-11762003)\n\nShare Feedback\n\nWas this page helpful?\n\nThanks for your feedback\\!\n\nWhat is your feedback?\n\nHelpful\n\nReport an Error\n\nOther\n\nMore In\n\nAt-Home COVID Test Guide\n\n- [![An illustration of a caucasian hand holding a rapid antigen COVID test on a bright yellow background.]() ![An illustration of a caucasian hand holding a rapid antigen COVID test on a bright yellow background.](https:\/\/www.verywellhealth.com\/thmb\/zdeHlfNnf9dqFDlyz3EQivQ-sfg=\/260x156\/filters:no_upscale\\(\\):max_bytes\\(150000\\):strip_icc\\(\\)\/GettyImages-1336822658-a6d57b457a21438ab49e12b6a464fdf7.jpeg) Are At-Home COVID-19 Tests Accurate? 1 of 4 Medically reviewed by Geetika Gupta, MD](https:\/\/www.verywellhealth.com\/are-at-home-covid-tests-accurate-enough-5210762)\n- [![Hands holding a rapid COVID-19 test.]() ![Hands holding a rapid COVID-19 test.](https:\/\/www.verywellhealth.com\/thmb\/tCt5nNuzZ7DsP1y17avCl8RU-9Y=\/260x156\/filters:no_upscale\\(\\):max_bytes\\(150000\\):strip_icc\\(\\)\/VWH-GettyImages-1331971219-a6a0859331a74d9fa2e916b633a47bd9.jpg) Should I Use a PCR or Rapid Test for COVID-19? 2 of 4 Medically reviewed by Jordana Haber Hazan, MD](https:\/\/www.verywellhealth.com\/pcr-vs-rapid-test-for-covid-19-5210788)\n- [![COVID test]() ![COVID test](https:\/\/www.verywellhealth.com\/thmb\/61Q3yefwCGm0PJmdz5ybkxB8uQg=\/260x156\/filters:no_upscale\\(\\):max_bytes\\(150000\\):strip_icc\\(\\)\/GettyImages-1335957608-0d1cd668154a4adea183cf21a17e9538.jpg) What to Do With a Positive At-Home COVID Test 3 of 4 Medically reviewed by Geetika Gupta, MD](https:\/\/www.verywellhealth.com\/what-to-do-with-a-positive-at-home-covid-test-result-5210146)\n- [![Retesting After COVID]() ![Retesting After COVID](https:\/\/www.verywellhealth.com\/thmb\/Sr7fxRWOjfROVSSP7vmz3rXrS8o=\/260x156\/filters:no_upscale\\(\\):max_bytes\\(150000\\):strip_icc\\(\\)\/GettyImages-1345296778-4d4e430f50f64900ab52988693387229.jpg) When to Retest if Your COVID-19 Test Is Positive 4 of 4 Medically reviewed by Renee Nilan, MD](https:\/\/www.verywellhealth.com\/retesting-after-having-covid-5216949)\n\nRelated Articles\n\n[![A person is sick in bed with COVID]() ![A person is sick in bed with COVID](https:\/\/www.verywellhealth.com\/thmb\/lruV03d_SgqWLkxPVmAhPOTOazg=\/400x250\/filters:no_upscale\\(\\):max_bytes\\(150000\\):strip_icc\\(\\)\/sick-GettyImages-1152594228-22023f875d424279bb8a6876c0778d31.jpg) Vomiting With COVID: What Helps?](https:\/\/www.verywellhealth.com\/is-vomiting-a-symptom-of-covid-8303173)\n\n[![A person with a headache sitting at home]() ![A person with a headache sitting at home](https:\/\/www.verywellhealth.com\/thmb\/hln0jvcwgrl-MZmjS18nQwHfN0g=\/400x250\/filters:no_upscale\\(\\):max_bytes\\(150000\\):strip_icc\\(\\)\/headache-GettyImages-1825551918-02b917cfe7db4740a6b76f155fd96c4d.jpg) How Long Do COVID-19 Headaches Last?](https:\/\/www.verywellhealth.com\/how-long-does-covid-headache-last-8548149)\n\n[![A person performs a home COVID-19 test]() ![A person performs a home COVID-19 test](https:\/\/www.verywellhealth.com\/thmb\/60yXB-K0vJo6tqWOKjFkKujLNuw=\/400x250\/filters:no_upscale\\(\\):max_bytes\\(150000\\):strip_icc\\(\\)\/home-covid-test-GettyImages-1369841284-d0a8140ec45b43669332cb9497972263.jpg) COVID-19 Exposure and the Testing Timeline](https:\/\/www.verywellhealth.com\/when-to-test-for-covid-8422718)\n\n[![COVID tests]() ![COVID tests](https:\/\/www.verywellhealth.com\/thmb\/OneqrXfA2cDULV9t8kTk-qk--zk=\/400x250\/filters:no_upscale\\(\\):max_bytes\\(150000\\):strip_icc\\(\\)\/VWHealth-COVID-Tests-V2-edit-2c9ca237496a4775a011f7964fcad8db.jpg) What to Do When You Feel Sick but Test Negative for COVID](https:\/\/www.verywellhealth.com\/keep-testing-negative-for-covid-7107807)\n\n[![Woman Receiving COVID-19 Vaccination, vaccine symptoms contagious]() ![Woman Receiving COVID-19 Vaccination, vaccine symptoms contagious](https:\/\/www.verywellhealth.com\/thmb\/RmWlXmYRQpPHCR1VogJaFHgi5Tg=\/400x250\/filters:no_upscale\\(\\):max_bytes\\(150000\\):strip_icc\\(\\)\/VWH-GettyImages-2207690728-b238b4bd3f5841a79567a42242d80730.jpg) Are COVID-19 Vaccine Side Effects Contagious?](https:\/\/www.verywellhealth.com\/covid-vaccine-side-effects-not-contagious-5182483)\n\n[![A Black woman wearing a face mask lifting weights.]() ![A Black woman wearing a face mask lifting weights.](https:\/\/www.verywellhealth.com\/thmb\/HA9bFpxXL9mFGVEtQopdzoqxss4=\/400x250\/filters:no_upscale\\(\\):max_bytes\\(150000\\):strip_icc\\(\\)\/pexels-monstera-6998865-8623023e34964311b7d8caee02f049d4.jpeg) Can You Work Out If You Have COVID? Here’s What Experts Recommend](https:\/\/www.verywellhealth.com\/working-out-with-covid-19-5272324)\n\n[![person peeling orange]() ![person peeling orange](https:\/\/www.verywellhealth.com\/thmb\/0xOZXLm2g7skH1lvxnvblPqfOHQ=\/400x250\/filters:no_upscale\\(\\):max_bytes\\(150000\\):strip_icc\\(\\)\/GettyImages-1730740303-6cbd7ba4310f48c0b5dc07a011319c17.jpg) Top Foods to Eat With COVID to Boost Immunity](https:\/\/www.verywellhealth.com\/what-to-eat-with-covid-8426258)\n\n[![A person wearing a mask with a COVID19 vaccine vial and syringes in the background]() ![A person wearing a mask with a COVID19 vaccine vial and syringes in the background](https:\/\/www.verywellhealth.com\/thmb\/u0WxbZ-KcmtMVu59wlbZ0Pk0p7c=\/400x250\/filters:no_upscale\\(\\):max_bytes\\(150000\\):strip_icc\\(\\)\/VWH-VACCINESPACKAGE-COVID-vaccine-recommendation-1-FINAL-1-7464e732360143d797781ce96ba776de.png) What to Know About the 2025-2026 COVID Vaccine](https:\/\/www.verywellhealth.com\/fall-covid-vaccine-guide-11777880)\n\n[![person holding a COVID rapid test]() ![person holding a COVID rapid test](https:\/\/www.verywellhealth.com\/thmb\/sePGgfiOm179p50S3rztXkYk5Bg=\/400x250\/filters:no_upscale\\(\\):max_bytes\\(150000\\):strip_icc\\(\\)\/VWH_Newsletter_Comp_V2_1500x1000-7fe2fbdb20594639a962a2fa99357453.jpg) What Does the Darkness of Your COVID Rapid Test Mean?](https:\/\/www.verywellhealth.com\/covid-rapid-test-line-color-5363078)\n\n[![flat lay illustration of medications with 'drug news' text]() ![flat lay illustration of medications with 'drug news' text](https:\/\/www.verywellhealth.com\/thmb\/93WwSK94HU_YURS-E5mnLDpl5eE=\/400x250\/filters:no_upscale\\(\\):max_bytes\\(150000\\):strip_icc\\(\\)\/drug_news_final_04-c4f9f0c70d7a49559361924728d8fd24.png) You Can Now Get Paxlovid Without Seeing a Provider](https:\/\/www.verywellhealth.com\/how-to-get-paxlovid-without-seeing-a-doctor-5649541)\n\n[![Illustration of a green and white pill capsule on a person's tongue on a pale green background]() ![Illustration of a green and white pill capsule on a person's tongue on a pale green background](https:\/\/www.verywellhealth.com\/thmb\/dr1gVHaCc2XSapbdRqgs320XcgU=\/400x250\/filters:no_upscale\\(\\):max_bytes\\(150000\\):strip_icc\\(\\)\/GettyImages-691037091-e826b153dca44abfb144fdad2f915dd7.jpeg) Dealing With the Dreaded Paxlovid Mouth](https:\/\/www.verywellhealth.com\/paxlovid-mouth-what-to-do-6361685)\n\n[![A person feels dizzy and is leaning against a wall indoors]() ![A person feels dizzy and is leaning against a wall indoors](https:\/\/www.verywellhealth.com\/thmb\/EhVRaKOBhApav-xdAzBIf9m-XLc=\/400x250\/filters:no_upscale\\(\\):max_bytes\\(150000\\):strip_icc\\(\\)\/dizziness-GettyImages-1397693555-44b07d02d5ca455e922823711320ce96.jpg) Managing Dizziness and Vertigo During and After COVID-19](https:\/\/www.verywellhealth.com\/is-dizziness-a-symptom-of-covid-8373849)\n\n[![Older woman receiving a vaccine shot in the arm. ]() ![Older woman receiving a vaccine shot in the arm. ](https:\/\/www.verywellhealth.com\/thmb\/Aj6Pdp4kFI-LxcSm-KQbunxPCmQ=\/400x250\/filters:no_upscale\\(\\):max_bytes\\(150000\\):strip_icc\\(\\)\/GettyImages-1278800342-162254c52c774880aa1ff90f48b55f13.jpg) How Long Does COVID-19 Vaccine-Induced Immunity Last?](https:\/\/www.verywellhealth.com\/length-of-covid-19-vaccine-immunity-5094857)\n\n[![A person cleans a kitchen counter with a spray bottle of cleaner and a cloth]() ![A person cleans a kitchen counter with a spray bottle of cleaner and a cloth](https:\/\/www.verywellhealth.com\/thmb\/Ivf3WPtlOkF7vkvDpN9qfE3Hqkg=\/400x250\/filters:no_upscale\\(\\):max_bytes\\(150000\\):strip_icc\\(\\)\/cleaning-kitchen-counter-GettyImages-1223036488-47e6fc01c3b6493fab13ebdcec5c1434.jpg) How Long Does COVID-19 Really Linger on Surfaces?](https:\/\/www.verywellhealth.com\/how-long-does-covid-live-on-surfaces-8546811)\n\n[![A person's hand holding a positive COVID-19 test]() ![A person's hand holding a positive COVID-19 test](https:\/\/www.verywellhealth.com\/thmb\/knPQSGyquvrZ-9XMDLYBPh9UuGw=\/400x250\/filters:no_upscale\\(\\):max_bytes\\(150000\\):strip_icc\\(\\)\/VWH-GettyImages-1371481334-788c9aa497094d849610ff564aa5d7b8.jpg) What is COVID Pneumonia?](https:\/\/www.verywellhealth.com\/pneumonia-and-covid-19-5180252)\n\n[![An illustration showing breathing exercises for COVID-10 phlegm.]() ![An illustration showing breathing exercises for COVID-10 phlegm.](https:\/\/www.verywellhealth.com\/thmb\/UxSxKMqsj5Gcl_XqtW-OClXStZ8=\/400x250\/filters:no_upscale\\(\\):max_bytes\\(150000\\):strip_icc\\(\\)\/VWH-JulieBang-ChestCongestionCovid-NoText-4000x2700-d967a311eef647a9b1899a8853aade71.png) Is Chest Congestion a COVID Warning Sign?](https:\/\/www.verywellhealth.com\/coughing-up-mucus-covid-5191212)\n\n- [Health A-Z](https:\/\/www.verywellhealth.com\/health-a-z-4014770)\n- [Prevention & Treatment](https:\/\/www.verywellhealth.com\/prevention-and-treatment-4158390)\n- [Health Care](https:\/\/www.verywellhealth.com\/health-care-4014769)\n- [News](https:\/\/www.verywellhealth.com\/news-4846412)\n\n- [Meet Our Review Board](https:\/\/www.verywellhealth.com\/meet-our-medical-expert-board-11762003)\n- [About Us](https:\/\/www.verywellhealth.com\/about-us-5180305)\n- [Editorial Process](https:\/\/www.verywellhealth.com\/verywell-editorial-process-4777042)\n- [Privacy Policy](https:\/\/www.people.inc\/brands-privacy)\n- [In the News](https:\/\/www.verywellhealth.com\/in-the-news-4778971)\n- [Advertise](https:\/\/www.people.inc\/advertising)\n- [Terms of Service](https:\/\/www.people.inc\/brands-termsofservice)\n- [Careers](https:\/\/www.people.inc\/careers)\n- [Contact](https:\/\/www.verywellhealth.com\/about-us-5180305#toc-contact-us)\n\nFollow Us\n\nVerywell Health's content is for informational and educational purposes only. Our website is not intended to be a substitute for professional medical advice, diagnosis, or treatment.\n\nⒸ 2026 People Inc. — All rights reserved\n\nVerywell Health is part of the [People Inc.](https:\/\/www.people.inc\/) publishing family.","attrs_readable_markdown":"### Key Takeaways\n- PCR tests are very accurate and can find the virus even in people without symptoms.\n- Rapid tests can be done at home and show results in minutes.\n- It's important to follow instructions closely when using a rapid test.\n\nTwo types of [COVID-19](https:\/\/www.verywellhealth.com\/coronavirus-covid-19-4799524) tests, the rapid antigen test and the [polymerase chain reaction (PCR) test](https:\/\/www.verywellhealth.com\/nucleic-acid-amplification-tests-3132631), are available in the United States. The PCR typically relies on lab testing and is still considered the \"gold standard\" for accuracy.\n\nThe rapid tests are commonly [at-home tests](https:\/\/www.verywellhealth.com\/covid-home-tests-5119404), with new options that have made testing easier. Not every test is created equal, though, and there are pros and cons to each type of COVID-19 test.\n\nIn January 2022, the federal government started a program that allowed you to order free rapid tests through the United States Postal Service. In March 2024, this program was suspended.\n\nThis article discusses the types of COVID tests and how they are used. It offers information to help you choose an at-home test, as well as how to determine when a healthcare provider or lab may be needed to ensure access to some tests and results.\n\nCarol Yepes\/Getty Images\n\n### FDA Warns About Counterfeit COVID-19 Test Kits\nThe Food and Drug Administration warns people to avoid counterfeit over-the-counter (OTC) COVID-19 diagnostic tests that are not authorized by the FDA. Signs that a test may be counterfeit include the following:\n\n- Box label, trade name, or printed instructions for use look different from the authorized labeling found on the [FDA website](https:\/\/www.fda.gov\/medical-devices\/coronavirus-covid-19-and-medical-devices\/home-otc-covid-19-diagnostic-tests)\n- Poor print quality of images or text on the packaging or instructions\n- Missing information on the packaging label (such as the lot number, expiration date, or barcode or QR codes)\n- Grammatical or spelling errors on labels\n\n[Polymerase chain reaction (PCR) tests](https:\/\/www.verywellhealth.com\/nucleic-acid-amplification-tests-3132631) are considered the \"gold standard\" for COVID-19 tests. PCR tests are a type of nucleic acid amplification test (NAAT) that takes a small sample of genetic material and copies it multiple times. This process is called amplification.\n\nAmplifying the genetic material makes detecting even the smallest amount of a virus easy. PCR tests can also differentiate between different virus variants—or strains. Since these tests examine microscopic bits of a virus's genetic material, they are highly reliable—often close to 100%.\n\nThe drawback of the PCR process is the time it takes and the fact that lab analysis is required to get results. The average turnaround time for PCR test results is two to three days after the lab receives your sample.\n\nThere are also a few options for NAATs that can be used at outpatient clinics and can provide a result in about 20 minutes. These tests look for nucleic acid from the virus instead of antigen.\n\nPros\n\n- Highly accurate\n- Can detect virus in asymptomatic people\n\nCons\n\n- Sample must be sent to a lab\n- Lengthy turnaround time (3-7 days)\n- Expensive\n- Higher false positive rate\n## Rapid Test\n[Rapid antigen tests](https:\/\/www.verywellhealth.com\/best-at-home-covid-test-5209818) look for pieces of the viral proteins from the SARS-CoV-2 virus ([antigens](https:\/\/www.verywellhealth.com\/what-is-an-antigen-5083801)) that cause COVID-19 rather than genetic material (nucleic acid from the virus). These tests are quick and are often used to detect other viruses that cause illnesses like the flu, [respiratory syncytial virus (RSV)](https:\/\/www.verywellhealth.com\/rsv-symptoms-treatments-770635), and [sexually transmitted infections (STIs)](https:\/\/www.verywellhealth.com\/can-i-get-an-std-blood-test-3132740).\n\nThe FDA has approved several rapid antigen tests for COVID-19 because they offer a more simple and accessible option for testing. They can also produce results within minutes.\n\n### How to Use a Rapid Test\nThese are general instructions on COVID rapid test use. Each test is different, so it's important to follow the instructions provided with the self-test you're taking.\n\n- Disinfect the surface where you plan on opening the testing kit.\n- Wash your hands with soap and water for at least 20 seconds.\n- Open testing materials only when you're ready to use them.\n- Follow manufacturer instructions for collecting your nasal (or saliva) sample and completing the test.\n- Wait the instructed amount of time before reading your test results.\n- Do not reuse your testing materials.\n- Throw away all testing materials and disinfect all surfaces.\n\nAntigen tests are not as sensitive as PCR-based or other nucleic acid amplification tests. PCR tests can detect the COVID-19 virus nearly 100% of the time. Antigen tests can only detect the virus in about 80% of people with [COVID-19 symptoms](https:\/\/www.verywellhealth.com\/how-long-does-covid-last-8547620). The accuracy is much lower in people who take the test when they have no symptoms.\n\nPros\n\n- Home-based\n- Fast results (10-30 minutes)\n- Cheaper than a PCR test\n- Good for repeated testing\n\nCons\n\n- User error can effect results\n- Higher false negative rate\n- Doesn't work well if you don't have symptoms\n## Choosing PCR vs. Rapid Test\nThere is no right or wrong answer when it comes to which COVID-19 test is best. There is a time and place for each type, and which one you choose will depend on your situation and symptoms.\n\nFor example, if you are sick and wondering whether your symptoms could be caused by COVID-19, a rapid test can give you that answer quickly. That's helpful because it would allow you to isolate yourself from other people to help reduce the spread of the virus.\n\nBoth PCR and antigen testing use samples of cells collected from your nose, mouth, or throat. PCR sample collections can be done at home but have to be sent to a lab for results. Rapid antigen tests can be done completely at home.\n\nHowever, if you do not have symptoms or you're simply taking a test before an event to make sure that you're not sick, a rapid antigen test may not be able to give you the most accurate result.\n\nPeople who are symptomatic who need testing before a medical procedure, people who are testing because they were [exposed](https:\/\/www.verywellhealth.com\/when-to-test-for-covid-8422718) to someone with COVID-19, or people who remain sick despite numerous negative rapid tests are the best candidates for PCR testing. While this type of testing takes longer and is more expensive than rapid tests, it can provide you with the most accurate result.\n\nPCR tests are generally considered more accurate than rapid tests, but rapid tests have benefits that PCR tests do not have—for example, they provide results faster and for a lower cost. The test that is right for you will depend on why you are taking the test and how soon you need to get results.\n\n## When Should You Test?\nWhen you should test will depend on whether or not you are experiencing COVID-19 symptoms.\n\n**If you have COVID symptoms:** Take a PCR test if you plan to use only one test. An antigen test is reliable for a positive result, but a negative result is more accurate with a PCR. If your rapid antigen test is negative, take another test in 48 hours or use a PCR test as soon as you can.\n\n**If you don't have COVID symptoms:** Wait at least five days from when you were exposed before taking either a PCR or antigen test. The same limitations and next-test recommendations apply (i.e., a negative antigen test is less reliable). If a second antigen test is negative after 48 hours, wait another 48 hours and test again.\n\nFor people testing **after a COVID infection**, the CDC recommends antigen tests. You do not need to take a test if you have no symptoms and it's still within 30 days of your last positive test.\n\nPeople may choose take a COVID test before traveling, or attending family gatherings and public events. The recommendation from the Centers for Disease Control and Prevention is to do these tests as close to the event time as possible, within one or two days.\n\n## Where to Find a Test\nThere are several ways to access a COVID-19 test. They include:\n\n- Buying FDA-approved kits (either online or at retail stores) for use at home\n- Finding a test site, using the [locator tool](https:\/\/testinglocator.cdc.gov\/) from the Centers for Disease Control and Prevention. Many pharmacies, including CVS and Walgreen's, offer COVID tests.\n\nCheck with your healthcare provider about COVID tests, too. They may offer testing, including antigen and PCR tests. If you have insurance, check your coverage to see what types of tests are covered since the end of the COVID public health emergency.\n\nStocksy\/Luis Velasco\n\nKeep in mind that you can collect samples for both PCR and rapid antigen tests at home, but you can only get immediate results with a rapid antigen test. It's possible (but unlikely) to get PCR test results in a few hours if you have direct access to a lab and there is no one else waiting.\n\n9 Sources\n\nVerywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our [editorial process](https:\/\/www.verywellhealth.com\/verywell-editorial-process-4777042) to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.\n\n![Rachael Zimlich](https:\/\/www.verywellhealth.com\/thmb\/9_k9bVFy3vMlyVzl3bN-HeFf6SE=\/144x144\/filters:no_upscale\\(\\):max_bytes\\(150000\\):strip_icc\\(\\)\/Rachael-Zimlich-1000-db09b152f8424b29a2ffa3d0123e917d.jpg)\n\nBy [Rachael Zimlich, BSN, RN](https:\/\/www.verywellhealth.com\/rachael-zimlich-rn-bsn-4798533)   \n Zimlich is a critical care nurse who has been writing about health care and clinical developments for over 10 years.\n\nWas this page helpful?\n\nThanks for your feedback\\!\n\nWhat is your feedback?","meta_canonical":null}

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Meta Title	PCR or Rapid Test: Which Is Better?
Meta Description	Learn the pros and cons of two COVID-19 test options: PCR and rapid test. Find out when to get them and which one is best suited for you.
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Boilerpipe Text	Key Takeaways PCR tests are very accurate and can find the virus even in people without symptoms. Rapid tests can be done at home and show results in minutes. It's important to follow instructions closely when using a rapid test. Two types of COVID-19 tests, the rapid antigen test and the polymerase chain reaction (PCR) test , are available in the United States. The PCR typically relies on lab testing and is still considered the "gold standard" for accuracy. The rapid tests are commonly at-home tests , with new options that have made testing easier. Not every test is created equal, though, and there are pros and cons to each type of COVID-19 test. In January 2022, the federal government started a program that allowed you to order free rapid tests through the United States Postal Service. In March 2024, this program was suspended. This article discusses the types of COVID tests and how they are used. It offers information to help you choose an at-home test, as well as how to determine when a healthcare provider or lab may be needed to ensure access to some tests and results. Carol Yepes/Getty Images FDA Warns About Counterfeit COVID-19 Test Kits The Food and Drug Administration warns people to avoid counterfeit over-the-counter (OTC) COVID-19 diagnostic tests that are not authorized by the FDA. Signs that a test may be counterfeit include the following: Box label, trade name, or printed instructions for use look different from the authorized labeling found on the FDA website Poor print quality of images or text on the packaging or instructions Missing information on the packaging label (such as the lot number, expiration date, or barcode or QR codes) Grammatical or spelling errors on labels Polymerase chain reaction (PCR) tests are considered the "gold standard" for COVID-19 tests. PCR tests are a type of nucleic acid amplification test (NAAT) that takes a small sample of genetic material and copies it multiple times. This process is called amplification. Amplifying the genetic material makes detecting even the smallest amount of a virus easy. PCR tests can also differentiate between different virus variants—or strains. Since these tests examine microscopic bits of a virus's genetic material, they are highly reliable—often close to 100%. The drawback of the PCR process is the time it takes and the fact that lab analysis is required to get results. The average turnaround time for PCR test results is two to three days after the lab receives your sample. There are also a few options for NAATs that can be used at outpatient clinics and can provide a result in about 20 minutes. These tests look for nucleic acid from the virus instead of antigen. Pros Highly accurate Can detect virus in asymptomatic people Cons Sample must be sent to a lab Lengthy turnaround time (3-7 days) Expensive Higher false positive rate Rapid Test Rapid antigen tests look for pieces of the viral proteins from the SARS-CoV-2 virus ( antigens ) that cause COVID-19 rather than genetic material (nucleic acid from the virus). These tests are quick and are often used to detect other viruses that cause illnesses like the flu, respiratory syncytial virus (RSV) , and sexually transmitted infections (STIs) . The FDA has approved several rapid antigen tests for COVID-19 because they offer a more simple and accessible option for testing. They can also produce results within minutes. How to Use a Rapid Test These are general instructions on COVID rapid test use. Each test is different, so it's important to follow the instructions provided with the self-test you're taking. Disinfect the surface where you plan on opening the testing kit. Wash your hands with soap and water for at least 20 seconds. Open testing materials only when you're ready to use them. Follow manufacturer instructions for collecting your nasal (or saliva) sample and completing the test. Wait the instructed amount of time before reading your test results. Do not reuse your testing materials. Throw away all testing materials and disinfect all surfaces. Antigen tests are not as sensitive as PCR-based or other nucleic acid amplification tests. PCR tests can detect the COVID-19 virus nearly 100% of the time. Antigen tests can only detect the virus in about 80% of people with COVID-19 symptoms . The accuracy is much lower in people who take the test when they have no symptoms. Pros Home-based Fast results (10-30 minutes) Cheaper than a PCR test Good for repeated testing Cons User error can effect results Higher false negative rate Doesn't work well if you don't have symptoms Choosing PCR vs. Rapid Test There is no right or wrong answer when it comes to which COVID-19 test is best. There is a time and place for each type, and which one you choose will depend on your situation and symptoms. For example, if you are sick and wondering whether your symptoms could be caused by COVID-19, a rapid test can give you that answer quickly. That's helpful because it would allow you to isolate yourself from other people to help reduce the spread of the virus. Both PCR and antigen testing use samples of cells collected from your nose, mouth, or throat. PCR sample collections can be done at home but have to be sent to a lab for results. Rapid antigen tests can be done completely at home. However, if you do not have symptoms or you're simply taking a test before an event to make sure that you're not sick, a rapid antigen test may not be able to give you the most accurate result. People who are symptomatic who need testing before a medical procedure, people who are testing because they were exposed to someone with COVID-19, or people who remain sick despite numerous negative rapid tests are the best candidates for PCR testing. While this type of testing takes longer and is more expensive than rapid tests, it can provide you with the most accurate result. PCR tests are generally considered more accurate than rapid tests, but rapid tests have benefits that PCR tests do not have—for example, they provide results faster and for a lower cost. The test that is right for you will depend on why you are taking the test and how soon you need to get results. When Should You Test? When you should test will depend on whether or not you are experiencing COVID-19 symptoms. If you have COVID symptoms: Take a PCR test if you plan to use only one test. An antigen test is reliable for a positive result, but a negative result is more accurate with a PCR. If your rapid antigen test is negative, take another test in 48 hours or use a PCR test as soon as you can. If you don't have COVID symptoms: Wait at least five days from when you were exposed before taking either a PCR or antigen test. The same limitations and next-test recommendations apply (i.e., a negative antigen test is less reliable). If a second antigen test is negative after 48 hours, wait another 48 hours and test again. For people testing after a COVID infection , the CDC recommends antigen tests. You do not need to take a test if you have no symptoms and it's still within 30 days of your last positive test. People may choose take a COVID test before traveling, or attending family gatherings and public events. The recommendation from the Centers for Disease Control and Prevention is to do these tests as close to the event time as possible, within one or two days. Where to Find a Test There are several ways to access a COVID-19 test. They include: Buying FDA-approved kits (either online or at retail stores) for use at home Finding a test site, using the locator tool from the Centers for Disease Control and Prevention. Many pharmacies, including CVS and Walgreen's, offer COVID tests. Check with your healthcare provider about COVID tests, too. They may offer testing, including antigen and PCR tests. If you have insurance, check your coverage to see what types of tests are covered since the end of the COVID public health emergency. Stocksy/Luis Velasco Keep in mind that you can collect samples for both PCR and rapid antigen tests at home, but you can only get immediate results with a rapid antigen test. It's possible (but unlikely) to get PCR test results in a few hours if you have direct access to a lab and there is no one else waiting. 9 Sources Verywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy. By Rachael Zimlich, BSN, RN Zimlich is a critical care nurse who has been writing about health care and clinical developments for over 10 years. Was this page helpful? Thanks for your feedback! What is your feedback?
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[Medical Review Board](https://www.verywellhealth.com/meet-our-medical-expert-board-11762003) Verywell Health's content is for informational and educational purposes only. Our website is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Ⓒ 2026 People Inc. — All rights reserved At-Home COVID Test Guide At-Home COVID Test Guide - [At-Home Test Accuracy](https://www.verywellhealth.com/are-at-home-covid-tests-accurate-enough-5210762) - [PCR vs. Rapid Tests](https://www.verywellhealth.com/pcr-vs-rapid-test-for-covid-19-5210788) - [Positive Result: What to Do Next](https://www.verywellhealth.com/what-to-do-with-a-positive-at-home-covid-test-result-5210146) - [Retesting After Having COVID](https://www.verywellhealth.com/retesting-after-having-covid-5216949) # PCR vs. Rapid Test for COVID-19: Which Should You Take? By [Rachael Zimlich, BSN, RN](https://www.verywellhealth.com/rachael-zimlich-rn-bsn-4798533) Updated on February 17, 2026 Medically reviewed by [Jordana Haber Hazan, MD](https://www.verywellhealth.com/jordana-haber-hazan-5216283) Table of Contents View All Table of Contents - [PCR Test](https://www.verywellhealth.com/pcr-vs-rapid-test-for-covid-19-5210788#toc-pcr-test) - [Rapid Test](https://www.verywellhealth.com/pcr-vs-rapid-test-for-covid-19-5210788#toc-rapid-test) - [Choosing a Test](https://www.verywellhealth.com/pcr-vs-rapid-test-for-covid-19-5210788#toc-choosing-pcr-vs-rapid-test) - [When Should You Test?](https://www.verywellhealth.com/pcr-vs-rapid-test-for-covid-19-5210788#toc-when-should-you-test) - [Where to Find a Test](https://www.verywellhealth.com/pcr-vs-rapid-test-for-covid-19-5210788#toc-where-to-find-a-test) - Next in At-Home COVID Test Guide [What to Do If You Get a Positive At-Home COVID-19 Test Result](https://www.verywellhealth.com/what-to-do-with-a-positive-at-home-covid-test-result-5210146) ### Key Takeaways - PCR tests are very accurate and can find the virus even in people without symptoms. - Rapid tests can be done at home and show results in minutes. - It's important to follow instructions closely when using a rapid test. Two types of [COVID-19](https://www.verywellhealth.com/coronavirus-covid-19-4799524) tests, the rapid antigen test and the [polymerase chain reaction (PCR) test](https://www.verywellhealth.com/nucleic-acid-amplification-tests-3132631), are available in the United States. The PCR typically relies on lab testing and is still considered the "gold standard" for accuracy. The rapid tests are commonly [at-home tests](https://www.verywellhealth.com/covid-home-tests-5119404), with new options that have made testing easier. Not every test is created equal, though, and there are pros and cons to each type of COVID-19 test. In January 2022, the federal government started a program that allowed you to order free rapid tests through the United States Postal Service. In March 2024, this program was suspended. This article discusses the types of COVID tests and how they are used. It offers information to help you choose an at-home test, as well as how to determine when a healthcare provider or lab may be needed to ensure access to some tests and results. ![Hands holding a rapid COVID-19 test.]() ![Hands holding a rapid COVID-19 test.](https://www.verywellhealth.com/thmb/tPcDXJFEceypvtRYEG3cfy7YdM4=/1500x0/filters:no_upscale\(\):max_bytes\(150000\):strip_icc\(\)/VWH-GettyImages-1331971219-a6a0859331a74d9fa2e916b633a47bd9.jpg) Carol Yepes/Getty Images ### FDA Warns About Counterfeit COVID-19 Test Kits The Food and Drug Administration warns people to avoid counterfeit over-the-counter (OTC) COVID-19 diagnostic tests that are not authorized by the FDA. Signs that a test may be counterfeit include the following: - Box label, trade name, or printed instructions for use look different from the authorized labeling found on the [FDA website](https://www.fda.gov/medical-devices/coronavirus-covid-19-and-medical-devices/home-otc-covid-19-diagnostic-tests) - Poor print quality of images or text on the packaging or instructions - Missing information on the packaging label (such as the lot number, expiration date, or barcode or QR codes) - Grammatical or spelling errors on labels ## PCR Test [Polymerase chain reaction (PCR) tests](https://www.verywellhealth.com/nucleic-acid-amplification-tests-3132631) are considered the "gold standard" for COVID-19 tests. PCR tests are a type of nucleic acid amplification test (NAAT) that takes a small sample of genetic material and copies it multiple times. This process is called amplification. Amplifying the genetic material makes detecting even the smallest amount of a virus easy. PCR tests can also differentiate between different virus variants—or strains. Since these tests examine microscopic bits of a virus's genetic material, they are highly reliable—often close to 100%. The drawback of the PCR process is the time it takes and the fact that lab analysis is required to get results. The average turnaround time for PCR test results is two to three days after the lab receives your sample. There are also a few options for NAATs that can be used at outpatient clinics and can provide a result in about 20 minutes. These tests look for nucleic acid from the virus instead of antigen. Pros - Highly accurate - Can detect virus in asymptomatic people Cons - Sample must be sent to a lab - Lengthy turnaround time (3-7 days) - Expensive - Higher false positive rate ## Rapid Test [Rapid antigen tests](https://www.verywellhealth.com/best-at-home-covid-test-5209818) look for pieces of the viral proteins from the SARS-CoV-2 virus ([antigens](https://www.verywellhealth.com/what-is-an-antigen-5083801)) that cause COVID-19 rather than genetic material (nucleic acid from the virus). These tests are quick and are often used to detect other viruses that cause illnesses like the flu, [respiratory syncytial virus (RSV)](https://www.verywellhealth.com/rsv-symptoms-treatments-770635), and [sexually transmitted infections (STIs)](https://www.verywellhealth.com/can-i-get-an-std-blood-test-3132740). The FDA has approved several rapid antigen tests for COVID-19 because they offer a more simple and accessible option for testing. They can also produce results within minutes. ### How to Use a Rapid Test These are general instructions on COVID rapid test use. Each test is different, so it's important to follow the instructions provided with the self-test you're taking. - Disinfect the surface where you plan on opening the testing kit. - Wash your hands with soap and water for at least 20 seconds. - Open testing materials only when you're ready to use them. - Follow manufacturer instructions for collecting your nasal (or saliva) sample and completing the test. - Wait the instructed amount of time before reading your test results. - Do not reuse your testing materials. - Throw away all testing materials and disinfect all surfaces. Antigen tests are not as sensitive as PCR-based or other nucleic acid amplification tests. PCR tests can detect the COVID-19 virus nearly 100% of the time. Antigen tests can only detect the virus in about 80% of people with [COVID-19 symptoms](https://www.verywellhealth.com/how-long-does-covid-last-8547620). The accuracy is much lower in people who take the test when they have no symptoms. Pros - Home-based - Fast results (10-30 minutes) - Cheaper than a PCR test - Good for repeated testing Cons - User error can effect results - Higher false negative rate - Doesn't work well if you don't have symptoms ## Choosing PCR vs. Rapid Test There is no right or wrong answer when it comes to which COVID-19 test is best. There is a time and place for each type, and which one you choose will depend on your situation and symptoms. For example, if you are sick and wondering whether your symptoms could be caused by COVID-19, a rapid test can give you that answer quickly. That's helpful because it would allow you to isolate yourself from other people to help reduce the spread of the virus. Both PCR and antigen testing use samples of cells collected from your nose, mouth, or throat. PCR sample collections can be done at home but have to be sent to a lab for results. Rapid antigen tests can be done completely at home. However, if you do not have symptoms or you're simply taking a test before an event to make sure that you're not sick, a rapid antigen test may not be able to give you the most accurate result. People who are symptomatic who need testing before a medical procedure, people who are testing because they were [exposed](https://www.verywellhealth.com/when-to-test-for-covid-8422718) to someone with COVID-19, or people who remain sick despite numerous negative rapid tests are the best candidates for PCR testing. While this type of testing takes longer and is more expensive than rapid tests, it can provide you with the most accurate result. PCR tests are generally considered more accurate than rapid tests, but rapid tests have benefits that PCR tests do not have—for example, they provide results faster and for a lower cost. The test that is right for you will depend on why you are taking the test and how soon you need to get results. ## When Should You Test? When you should test will depend on whether or not you are experiencing COVID-19 symptoms. If you have COVID symptoms: Take a PCR test if you plan to use only one test. An antigen test is reliable for a positive result, but a negative result is more accurate with a PCR. If your rapid antigen test is negative, take another test in 48 hours or use a PCR test as soon as you can. If you don't have COVID symptoms: Wait at least five days from when you were exposed before taking either a PCR or antigen test. The same limitations and next-test recommendations apply (i.e., a negative antigen test is less reliable). If a second antigen test is negative after 48 hours, wait another 48 hours and test again. For people testing after a COVID infection, the CDC recommends antigen tests. You do not need to take a test if you have no symptoms and it's still within 30 days of your last positive test. People may choose take a COVID test before traveling, or attending family gatherings and public events. The recommendation from the Centers for Disease Control and Prevention is to do these tests as close to the event time as possible, within one or two days. ## Where to Find a Test There are several ways to access a COVID-19 test. They include: - Buying FDA-approved kits (either online or at retail stores) for use at home - Finding a test site, using the [locator tool](https://testinglocator.cdc.gov/) from the Centers for Disease Control and Prevention. Many pharmacies, including CVS and Walgreen's, offer COVID tests. Check with your healthcare provider about COVID tests, too. They may offer testing, including antigen and PCR tests. If you have insurance, check your coverage to see what types of tests are covered since the end of the COVID public health emergency. ![woman receiving covid test in pharmacy]() ![woman receiving covid test in pharmacy](https://www.verywellhealth.com/thmb/_oh0ruC-rKKEJGciAEnjgvXaEWU=/1500x0/filters:no_upscale\(\):max_bytes\(150000\):strip_icc\(\)/Health-Stocksy-3740634-ee1029112f6d42d08a2795385d670b03.jpg) Stocksy/Luis Velasco Keep in mind that you can collect samples for both PCR and rapid antigen tests at home, but you can only get immediate results with a rapid antigen test. It's possible (but unlikely) to get PCR test results in a few hours if you have direct access to a lab and there is no one else waiting. Read more: - [Health A-Z](https://www.verywellhealth.com/health-a-z-4014770) - [Infectious Diseases](https://www.verywellhealth.com/infectious-diseases-4014700) - [Coronavirus (COVID-19)](https://www.verywellhealth.com/coronavirus-covid-19-4799524) 9 Sources Verywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our [editorial process](https://www.verywellhealth.com/verywell-editorial-process-4777042) to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy. 1. Centers for Disease Control and Prevention. [Testing for COVID-19](https://www.cdc.gov/covid/testing/). 2. United States Postal Service. [At-Home COVID-19 Tests](https://faq.usps.com/s/article/At-Home-COVID-19-Test-Kits). 3. Food and Drug Administration. [Counterfeit At-Home OTC COVID-19 Diagnostic Tests](https://www.fda.gov/medical-devices/coronavirus-covid-19-and-medical-devices/counterfeit-home-otc-covid-19-diagnostic-tests#signs). 4. Crozier A, Rajan S, Buchan I, et al. [Put to the test: use of rapid testing technologies for COVID-19](https://www.bmj.com/content/372/bmj.n208). BMJ. February2021;372:n208 doi:10.1136/bmj.n208 5. Hafer N. [What’s the difference between a PCR and antigen COVID-19 test?](https://www.umassmed.edu/news/news-archives/2021/11/whats-the-difference-between-a-pcr-and-antigen-covid-19-test/). UMass Chan Medical School. 6. Abbott. [COVID-19 Rapid Testing: Every Minute Counts](https://www.abbott.com/corpnewsroom/diagnostics-testing/covid-19-rapid-testing-every-minute-counts.html). 7. U.S. Food and Drug Administration. [At-home OTC COVID-19 diagnostic tests](https://www.fda.gov/medical-devices/coronavirus-covid-19-and-medical-devices/home-otc-covid-19-diagnostic-tests). 8. Infectious Disease Society of America. [IDSA Guidelines on the Diagnosis of COVID-19: Antigen Testing](https://www.idsociety.org/practice-guideline/covid-19-guideline-antigen-testing/). 9. U.S. Food and Drug Administration. [At-Home COVID-19 Antigen Tests-Take Steps to Reduce YourRisk of False Negative Results: FDA Safety Communication](https://www.fda.gov/medical-devices/safety-communications/home-covid-19-antigen-tests-take-steps-reduce-your-risk-false-negative-results-fda-safety). ![Rachael Zimlich]() ![Rachael Zimlich](https://www.verywellhealth.com/thmb/9_k9bVFy3vMlyVzl3bN-HeFf6SE=/144x144/filters:no_upscale\(\):max_bytes\(150000\):strip_icc\(\)/Rachael-Zimlich-1000-db09b152f8424b29a2ffa3d0123e917d.jpg) By [Rachael Zimlich, BSN, RN](https://www.verywellhealth.com/rachael-zimlich-rn-bsn-4798533) Zimlich is a critical care nurse who has been writing about health care and clinical developments for over 10 years. [See Our Editorial Process](https://www.verywellhealth.com/verywell-editorial-process-4777042) [Meet Our Medical Expert Board](https://www.verywellhealth.com/meet-our-medical-expert-board-11762003) Share Feedback Was this page helpful? Thanks for your feedback\! What is your feedback? Helpful Report an Error Other More In At-Home COVID Test Guide - [![An illustration of a caucasian hand holding a rapid antigen COVID test on a bright yellow background.]() ![An illustration of a caucasian hand holding a rapid antigen COVID test on a bright yellow background.](https://www.verywellhealth.com/thmb/zdeHlfNnf9dqFDlyz3EQivQ-sfg=/260x156/filters:no_upscale\(\):max_bytes\(150000\):strip_icc\(\)/GettyImages-1336822658-a6d57b457a21438ab49e12b6a464fdf7.jpeg) Are At-Home COVID-19 Tests Accurate? 1 of 4 Medically reviewed by Geetika Gupta, MD](https://www.verywellhealth.com/are-at-home-covid-tests-accurate-enough-5210762) - [![Hands holding a rapid COVID-19 test.]() ![Hands holding a rapid COVID-19 test.](https://www.verywellhealth.com/thmb/tCt5nNuzZ7DsP1y17avCl8RU-9Y=/260x156/filters:no_upscale\(\):max_bytes\(150000\):strip_icc\(\)/VWH-GettyImages-1331971219-a6a0859331a74d9fa2e916b633a47bd9.jpg) Should I Use a PCR or Rapid Test for COVID-19? 2 of 4 Medically reviewed by Jordana Haber Hazan, MD](https://www.verywellhealth.com/pcr-vs-rapid-test-for-covid-19-5210788) - [![COVID test]() ![COVID test](https://www.verywellhealth.com/thmb/61Q3yefwCGm0PJmdz5ybkxB8uQg=/260x156/filters:no_upscale\(\):max_bytes\(150000\):strip_icc\(\)/GettyImages-1335957608-0d1cd668154a4adea183cf21a17e9538.jpg) What to Do With a Positive At-Home COVID Test 3 of 4 Medically reviewed by Geetika Gupta, MD](https://www.verywellhealth.com/what-to-do-with-a-positive-at-home-covid-test-result-5210146) - [![Retesting After COVID]() ![Retesting After COVID](https://www.verywellhealth.com/thmb/Sr7fxRWOjfROVSSP7vmz3rXrS8o=/260x156/filters:no_upscale\(\):max_bytes\(150000\):strip_icc\(\)/GettyImages-1345296778-4d4e430f50f64900ab52988693387229.jpg) When to Retest if Your COVID-19 Test Is Positive 4 of 4 Medically reviewed by Renee Nilan, MD](https://www.verywellhealth.com/retesting-after-having-covid-5216949) Related Articles [![A person is sick in bed with COVID]() ![A person is sick in bed with COVID](https://www.verywellhealth.com/thmb/lruV03d_SgqWLkxPVmAhPOTOazg=/400x250/filters:no_upscale\(\):max_bytes\(150000\):strip_icc\(\)/sick-GettyImages-1152594228-22023f875d424279bb8a6876c0778d31.jpg) Vomiting With COVID: What Helps?](https://www.verywellhealth.com/is-vomiting-a-symptom-of-covid-8303173) [![A person with a headache sitting at home]() ![A person with a headache sitting at home](https://www.verywellhealth.com/thmb/hln0jvcwgrl-MZmjS18nQwHfN0g=/400x250/filters:no_upscale\(\):max_bytes\(150000\):strip_icc\(\)/headache-GettyImages-1825551918-02b917cfe7db4740a6b76f155fd96c4d.jpg) How Long Do COVID-19 Headaches Last?](https://www.verywellhealth.com/how-long-does-covid-headache-last-8548149) [![A person performs a home COVID-19 test]() ![A person performs a home COVID-19 test](https://www.verywellhealth.com/thmb/60yXB-K0vJo6tqWOKjFkKujLNuw=/400x250/filters:no_upscale\(\):max_bytes\(150000\):strip_icc\(\)/home-covid-test-GettyImages-1369841284-d0a8140ec45b43669332cb9497972263.jpg) COVID-19 Exposure and the Testing Timeline](https://www.verywellhealth.com/when-to-test-for-covid-8422718) [![COVID tests]() ![COVID tests](https://www.verywellhealth.com/thmb/OneqrXfA2cDULV9t8kTk-qk--zk=/400x250/filters:no_upscale\(\):max_bytes\(150000\):strip_icc\(\)/VWHealth-COVID-Tests-V2-edit-2c9ca237496a4775a011f7964fcad8db.jpg) What to Do When You Feel Sick but Test Negative for COVID](https://www.verywellhealth.com/keep-testing-negative-for-covid-7107807) [![Woman Receiving COVID-19 Vaccination, vaccine symptoms contagious]() ![Woman Receiving COVID-19 Vaccination, vaccine symptoms contagious](https://www.verywellhealth.com/thmb/RmWlXmYRQpPHCR1VogJaFHgi5Tg=/400x250/filters:no_upscale\(\):max_bytes\(150000\):strip_icc\(\)/VWH-GettyImages-2207690728-b238b4bd3f5841a79567a42242d80730.jpg) Are COVID-19 Vaccine Side Effects Contagious?](https://www.verywellhealth.com/covid-vaccine-side-effects-not-contagious-5182483) [![A Black woman wearing a face mask lifting weights.]() ![A Black woman wearing a face mask lifting weights.](https://www.verywellhealth.com/thmb/HA9bFpxXL9mFGVEtQopdzoqxss4=/400x250/filters:no_upscale\(\):max_bytes\(150000\):strip_icc\(\)/pexels-monstera-6998865-8623023e34964311b7d8caee02f049d4.jpeg) Can You Work Out If You Have COVID? 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Readable Markdown	### Key Takeaways - PCR tests are very accurate and can find the virus even in people without symptoms. - Rapid tests can be done at home and show results in minutes. - It's important to follow instructions closely when using a rapid test. Two types of [COVID-19](https://www.verywellhealth.com/coronavirus-covid-19-4799524) tests, the rapid antigen test and the [polymerase chain reaction (PCR) test](https://www.verywellhealth.com/nucleic-acid-amplification-tests-3132631), are available in the United States. The PCR typically relies on lab testing and is still considered the "gold standard" for accuracy. The rapid tests are commonly [at-home tests](https://www.verywellhealth.com/covid-home-tests-5119404), with new options that have made testing easier. Not every test is created equal, though, and there are pros and cons to each type of COVID-19 test. In January 2022, the federal government started a program that allowed you to order free rapid tests through the United States Postal Service. In March 2024, this program was suspended. This article discusses the types of COVID tests and how they are used. It offers information to help you choose an at-home test, as well as how to determine when a healthcare provider or lab may be needed to ensure access to some tests and results. Carol Yepes/Getty Images ### FDA Warns About Counterfeit COVID-19 Test Kits The Food and Drug Administration warns people to avoid counterfeit over-the-counter (OTC) COVID-19 diagnostic tests that are not authorized by the FDA. Signs that a test may be counterfeit include the following: - Box label, trade name, or printed instructions for use look different from the authorized labeling found on the [FDA website](https://www.fda.gov/medical-devices/coronavirus-covid-19-and-medical-devices/home-otc-covid-19-diagnostic-tests) - Poor print quality of images or text on the packaging or instructions - Missing information on the packaging label (such as the lot number, expiration date, or barcode or QR codes) - Grammatical or spelling errors on labels [Polymerase chain reaction (PCR) tests](https://www.verywellhealth.com/nucleic-acid-amplification-tests-3132631) are considered the "gold standard" for COVID-19 tests. PCR tests are a type of nucleic acid amplification test (NAAT) that takes a small sample of genetic material and copies it multiple times. This process is called amplification. Amplifying the genetic material makes detecting even the smallest amount of a virus easy. PCR tests can also differentiate between different virus variants—or strains. Since these tests examine microscopic bits of a virus's genetic material, they are highly reliable—often close to 100%. The drawback of the PCR process is the time it takes and the fact that lab analysis is required to get results. The average turnaround time for PCR test results is two to three days after the lab receives your sample. There are also a few options for NAATs that can be used at outpatient clinics and can provide a result in about 20 minutes. These tests look for nucleic acid from the virus instead of antigen. Pros - Highly accurate - Can detect virus in asymptomatic people Cons - Sample must be sent to a lab - Lengthy turnaround time (3-7 days) - Expensive - Higher false positive rate ## Rapid Test [Rapid antigen tests](https://www.verywellhealth.com/best-at-home-covid-test-5209818) look for pieces of the viral proteins from the SARS-CoV-2 virus ([antigens](https://www.verywellhealth.com/what-is-an-antigen-5083801)) that cause COVID-19 rather than genetic material (nucleic acid from the virus). These tests are quick and are often used to detect other viruses that cause illnesses like the flu, [respiratory syncytial virus (RSV)](https://www.verywellhealth.com/rsv-symptoms-treatments-770635), and [sexually transmitted infections (STIs)](https://www.verywellhealth.com/can-i-get-an-std-blood-test-3132740). The FDA has approved several rapid antigen tests for COVID-19 because they offer a more simple and accessible option for testing. They can also produce results within minutes. ### How to Use a Rapid Test These are general instructions on COVID rapid test use. Each test is different, so it's important to follow the instructions provided with the self-test you're taking. - Disinfect the surface where you plan on opening the testing kit. - Wash your hands with soap and water for at least 20 seconds. - Open testing materials only when you're ready to use them. - Follow manufacturer instructions for collecting your nasal (or saliva) sample and completing the test. - Wait the instructed amount of time before reading your test results. - Do not reuse your testing materials. - Throw away all testing materials and disinfect all surfaces. Antigen tests are not as sensitive as PCR-based or other nucleic acid amplification tests. PCR tests can detect the COVID-19 virus nearly 100% of the time. Antigen tests can only detect the virus in about 80% of people with [COVID-19 symptoms](https://www.verywellhealth.com/how-long-does-covid-last-8547620). The accuracy is much lower in people who take the test when they have no symptoms. Pros - Home-based - Fast results (10-30 minutes) - Cheaper than a PCR test - Good for repeated testing Cons - User error can effect results - Higher false negative rate - Doesn't work well if you don't have symptoms ## Choosing PCR vs. Rapid Test There is no right or wrong answer when it comes to which COVID-19 test is best. There is a time and place for each type, and which one you choose will depend on your situation and symptoms. For example, if you are sick and wondering whether your symptoms could be caused by COVID-19, a rapid test can give you that answer quickly. That's helpful because it would allow you to isolate yourself from other people to help reduce the spread of the virus. Both PCR and antigen testing use samples of cells collected from your nose, mouth, or throat. PCR sample collections can be done at home but have to be sent to a lab for results. Rapid antigen tests can be done completely at home. However, if you do not have symptoms or you're simply taking a test before an event to make sure that you're not sick, a rapid antigen test may not be able to give you the most accurate result. People who are symptomatic who need testing before a medical procedure, people who are testing because they were [exposed](https://www.verywellhealth.com/when-to-test-for-covid-8422718) to someone with COVID-19, or people who remain sick despite numerous negative rapid tests are the best candidates for PCR testing. While this type of testing takes longer and is more expensive than rapid tests, it can provide you with the most accurate result. PCR tests are generally considered more accurate than rapid tests, but rapid tests have benefits that PCR tests do not have—for example, they provide results faster and for a lower cost. The test that is right for you will depend on why you are taking the test and how soon you need to get results. ## When Should You Test? When you should test will depend on whether or not you are experiencing COVID-19 symptoms. If you have COVID symptoms: Take a PCR test if you plan to use only one test. An antigen test is reliable for a positive result, but a negative result is more accurate with a PCR. If your rapid antigen test is negative, take another test in 48 hours or use a PCR test as soon as you can. If you don't have COVID symptoms: Wait at least five days from when you were exposed before taking either a PCR or antigen test. The same limitations and next-test recommendations apply (i.e., a negative antigen test is less reliable). If a second antigen test is negative after 48 hours, wait another 48 hours and test again. For people testing after a COVID infection, the CDC recommends antigen tests. You do not need to take a test if you have no symptoms and it's still within 30 days of your last positive test. People may choose take a COVID test before traveling, or attending family gatherings and public events. The recommendation from the Centers for Disease Control and Prevention is to do these tests as close to the event time as possible, within one or two days. ## Where to Find a Test There are several ways to access a COVID-19 test. They include: - Buying FDA-approved kits (either online or at retail stores) for use at home - Finding a test site, using the [locator tool](https://testinglocator.cdc.gov/) from the Centers for Disease Control and Prevention. Many pharmacies, including CVS and Walgreen's, offer COVID tests. Check with your healthcare provider about COVID tests, too. They may offer testing, including antigen and PCR tests. If you have insurance, check your coverage to see what types of tests are covered since the end of the COVID public health emergency. Stocksy/Luis Velasco Keep in mind that you can collect samples for both PCR and rapid antigen tests at home, but you can only get immediate results with a rapid antigen test. It's possible (but unlikely) to get PCR test results in a few hours if you have direct access to a lab and there is no one else waiting. 9 Sources Verywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our [editorial process](https://www.verywellhealth.com/verywell-editorial-process-4777042) to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy. ![Rachael Zimlich](https://www.verywellhealth.com/thmb/9_k9bVFy3vMlyVzl3bN-HeFf6SE=/144x144/filters:no_upscale\(\):max_bytes\(150000\):strip_icc\(\)/Rachael-Zimlich-1000-db09b152f8424b29a2ffa3d0123e917d.jpg) By [Rachael Zimlich, BSN, RN](https://www.verywellhealth.com/rachael-zimlich-rn-bsn-4798533) Zimlich is a critical care nurse who has been writing about health care and clinical developments for over 10 years. Was this page helpful? Thanks for your feedback\! What is your feedback?
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