Start wearing a mask right away and get tested five full days after the last time you were close to a person with COVID-19. Visit If You Are Sick or Test Positive for information on staying home and wearing a mask if you have symptoms.Talk to your health care provider if you have questions about what test to use and when to test.They should get the test as soon as possible after the antigen test. People who have not had COVID-19 in the last 90 days can also get a PCR or other molecular test to confirm their negative antigen result.If you got an antigen test at a clinic or other testing location, get another antigen test in 24 to 48 hours.For more details on repeat testing, refer to At-Home COVID-19 Antigen Tests-Take Steps to Reduce Your Risk of False Negative: FDA Safety Communication. Follow the manufacturer instructions in your self-test kit for when to take another test. If you used a self-test, the CDC and FDA recommend repeat testing after a negative antigen result whether or not you have symptoms.Multiple negative antigen tests mean you can be more sure that you are not infected with the virus that causes COVID-19. If you have a negative antigen test, you should have another test.You should take an antigen test instead of a molecular test (for example, a PCR or NAAT test) because molecular tests can continue to detect SARS-CoV-2 (the virus that causes COVID-19) even after you feel better. If you had COVID-19 in the last 90 days, you still need to get tested if you develop new symptoms.The box should tell you what kind of test you have.
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