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

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

   False positive COVID-19 tests occur when you don’t have the novel coronavirus, but the test is positive. ... The false positive rate on rapid antigen testing is rare. ... which has over 200 ...

3. Are False Positive Covid Tests Common? Doctors Explain. - AOL

   www.aol.com/false-positive-covid-tests-common...

   A false positive Covid-19 test result can happen, but it’s rare, says Brian Labus, Ph.D., ... “The rapid tests have a sensitivity of over 99 percent, which means that false positive results ...

4. Got a Faint Line on a COVID-19 Home Test? Here's What ... - AOL

   www.aol.com/got-faint-line-covid-19-145700240.html

   A false positive isn't as likely as a false negative result on a home test early in a person's infection, explains Sandra H. Bonat, M.D., a pediatric expert and virologist with VIP StarNetwork, a ...

5. COVID-19 testing - Wikipedia

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

   Accuracy is measured in terms of specificity and selectivity. Test errors can be false positives (the test is positive, but the virus is not present) or false negatives, (the test is negative, but the virus is present). [179] In a study of over 900,000 rapid antigen tests, false positives were found to occur at a rate of 0.05% or 1 in 2000. [180]

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. Viral disease testing - Wikipedia

   en.wikipedia.org/wiki/Viral_disease_testing

   It has a low false positive rate, but a higher false negative rate. A negative test result may require confirmation with a PCR test. [8] Advocates claim that antigen tests are less expensive and can be scaled up more rapidly than PCR tests. [8] Antigen tests are available for a variety of conditions, including streptococcus, [15] influenza ...

8. Rapid Covid tests give many false negatives, but that may ...

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   Rapid Covid tests miss a lot of asymptomatic cases, but they're good at identifying when people have high viral loads, research suggests. Rapid Covid tests give many false negatives, but that may ...

9. False positive rate - Wikipedia

   en.wikipedia.org/wiki/False_positive_rate

   The false positive rate (false alarm rate) is = + [1] where F P {\displaystyle \mathrm {FP} } is the number of false positives, T N {\displaystyle \mathrm {TN} } is the number of true negatives and N = F P + T N {\displaystyle N=\mathrm {FP} +\mathrm {TN} } is the total number of ground truth negatives.