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  2. Why you have COVID symptoms and a negative test: You ... - AOL

    www.aol.com/finance/why-covid-symptoms-negative...

    If you still test negative, wait 48 more hours and test for a final time. In both cases, if you’d rather not wait, you can obtain a PCR, or polymerase chain reaction, test at a doctor’s office.

  3. You can still be contagious with COVID if you have a negative ...

    www.aol.com/news/still-contagious-covid-negative...

    If you get two negative at-home COVID test results 48 hours apart after previously testing positive, you are likely no longer contagious. But how long that will take is "wholly dependent on the ...

  4. Yes, You Can ‘Test Out’ Of COVID Isolation—Here Are The Rules

    www.aol.com/yes-test-covid-isolation-rules...

    Yes, you can still test positive for COVID after seven days with either test. While Dr. Adalja says that’s especially true with PCR tests, it also can be the case with antigen tests.

  5. COVID-19 testing - Wikipedia

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

    If the pool result is negative, all samples are negative. If the test result is positive, samples will need to be individually tested. [69] In Israel, researchers at Technion and Rambam Hospital developed a method for testing samples from 64 patients simultaneously, by pooling the samples and only testing further if the combined sample was ...

  6. 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]

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

    www.aol.com/lifestyle/false-positive-covid-19...

    If you’re unsure about the accuracy of your results, the FDA says you can reduce the risk of a false negative test by taking multiple tests after a negative result over the course of two to ...

  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. Here's what travelers should know about at-home COVID ... - AOL

    www.aol.com/heres-travelers-know-home-covid...

    The BinaxNOW home test correctly identified 91.7% of positive cases and 100% of negative cases, according to the FDA. Ellume reports that its home test results are 96% accurate.