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

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

    The only situation in which you wouldn't assume that a faint line on a rapid test is positive is if it turned positive after the allotted testing period, Garner says.

  3. What should you do if you’re still testing positive for COVID ...

    www.aol.com/news/still-testing-positive-covid-19...

    Experts are monitoring increases in COVID-19 cases in the U.S. driven by new, highly infectious variants.So take a moment to make sure you how and when to use at-home COVID tests to help you stay ...

  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...

    Tests are generally divided into two types. Viral testing can identify if a person is currently infected with SARS-CoV-2. Antibody testing can identify if a person has previously been exposed to the virus. [64] As of August 2020, the FDA had granted Emergency Use Authorizations to over 200 tests for detecting current or past infection. [65]

  6. Medical test - Wikipedia

    en.wikipedia.org/wiki/Medical_test

    A medical test is a medical procedure performed to detect, diagnose, or monitor diseases, disease processes, susceptibility, or to determine a course of treatment. Medical tests such as, physical and visual exams, diagnostic imaging, genetic testing, chemical and cellular analysis, relating to clinical chemistry and molecular diagnostics, are typically performed in a medical setting.

  7. COVID-19 testing - Wikipedia

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

    Low-specificity tests have a low positive predictive value (PPV) when prevalence is low. For example, suppose incidence is 5%. Testing 100 people at random using a test that has a specificity of 95% would yield on average 5 people who are actually negative who would incorrectly test positive. Since 5% of the subjects actually are positive ...

  8. Lateral flow test - Wikipedia

    en.wikipedia.org/wiki/Lateral_flow_test

    A NASA illustration of a lateral flow assay. A lateral flow test (LFT), [1] is an assay also known as a lateral flow immunochromatographic test (ICT), or rapid test.It is a simple device intended to detect the presence of a target substance in a liquid sample without the need for specialized and costly equipment.

  9. Drug testing welfare recipients - Wikipedia

    en.wikipedia.org/wiki/Drug_testing_welfare...

    In a pilot drug testing program in Florida in 1999-2000, 5.1% returned a positive urinalysis. [24] A 2015 study by ThinkProgress found that out of seven states reporting data on welfare drug testing, only one had a usage rate above 1%. [15]