![]() ![]() ![]() They are less reliable than NAATs, especially for people who do not have symptoms. Antigen tests* are rapid tests which produce results in 15-30 minutes.Therefore, you should not use a NAAT if you have tested positive in the last 90 days. These tests detect viral genetic material, which may stay in your body for up to 90 days after you test positive. They are typically the most reliable tests for people with or without symptoms. ![]() NAATs, such as PCR-based tests, are most often performed in a laboratory.All tests should be performed following FDA’s requirements. In certain circumstances, one test type may be recommended over the other. There are two main types of viral tests: nucleic acid amplification tests (NAATs) and antigen tests. Viral tests look for a current infection with SARS-CoV-2, the virus that causes COVID-19, by testing specimens from your nose or mouth. ![]()
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