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2. The differences you need to know about PCR and rapid ... - AOL

   www.aol.com/news/differences-know-pcr-rapid...

   The government is offering free COVID-19 testing kits to all Americans, many may have questions about how accurate these tests are. Both the PCR and Antigen tests can detect an active case of ...

3. COVID-19 testing - Wikipedia

   en.wikipedia.org/wiki/COVID-19_testing

   SARS-CoV-2 antigens can be detected before onset of COVID-19 symptoms (as soon as SARS-CoV-2 virus particles) with more rapid test results, but with less sensitivity than PCR tests for the virus. [57] COVID-19 rapid antigen tests are lateral flow immunoassays that detect the presence of a specific viral antigen, which indicates current viral ...

4. COVID-19 rapid antigen test - Wikipedia

   en.wikipedia.org/wiki/COVID-19_rapid_antigen_test

   COVID-19 rapid antigen tests (RATs) have been widely used for diagnosis of COVID-19. The World Health Organization (WHO) COVID-19 Case Definition states that a person with a positive RAT (also known as an antigen rapid diagnostic test or Antigen-RDT) can be considered a "confirmed case of SARS-CoV-2 infection" in two ways. [10]

5. COVID-19 testing in the United States - Wikipedia

   en.wikipedia.org/wiki/COVID-19_testing_in_the...

   These measures included the appointment of Admiral Brett Giroir of the U.S. Public Health Service to oversee testing, funding for two companies developing rapid tests, and a hotline to help labs find needed supplies. [25] The FDA also gave emergency authorization for New York to obtain an automated coronavirus testing machine. [26]

6. What Really Causes a False Positive COVID-19 Test? Experts ...

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   In the most basic sense, there are four possible outcomes for a COVID-19 test, whether it’s molecular PCR or rapid antigen: true positive, true negative, false positive, and false negative.

7. What does a faint line on a rapid COVID-19 test mean? - AOL

   www.aol.com/faint-line-covid-19-test-225851470.html

   However, people who've had COVID-19 may continue to test positive on PCR tests for up to 90 days, so it may be difficult to use a PCR test to diagnose a new coronavirus infection.

8. Rapid antigen test - Wikipedia

   en.wikipedia.org/wiki/Rapid_antigen_test

   A COVID-19 Rapid Antigen test(top) with a Covid-19 Rapid Antigen and a Influenza A&B Rapid Antigen Test(bottom) A rapid antigen test (RAT), sometimes called a rapid antigen detection test (RADT), antigen rapid test (ART), or loosely just a rapid test, is a rapid diagnostic test suitable for point-of-care testing that directly detects the presence or absence of an antigen.

9. How to Know When to Use a Rapid Test or PCR Test for COVID-19

   www.aol.com/lifestyle/know-rapid-test-pcr-test...

   The best COVID test for your particular situation may surprise you. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ways ...