Whitehouse Centers for Disease Control and Prevention US Department of Homeland Security - Federal Emergency Management Agency

Can a person test negative and later test positive for COVID-19?

Yes, it is possible. You may test negative if the sample was collected early in your infection and test positive later during this illness. You could also be exposed to COVID-19 after the test and get infected then. Even if you test negative, you still should take steps to protect yourself and others. See Testing for Current Infection for more information.

Last updated January 14, 2021
Source: Centers for Disease Control and Preventionlinks to external site

See also: Symptoms and testing