COVID-19 Test Basics | FDA - U.S. Food and Drug Administration
https://www.fda.gov/consumers/consumer-updates/covid-19-test-basics
WEBSep 7, 2023 · Antigen tests, often referred to as rapid tests or, for some, at-home or self tests, which detect proteins called antigens from the virus. Samples for COVID-19 diagnostic tests are...
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