Is my RAT actually working? How to tell if your COVID test can detect Omicron

By Thea van de Mortel
Updated December 12 2022 - 2:09pm, first published 1:00pm

You've tested negative for COVID using a rapid antigen test (RAT), but are a close contact of a positive family member and have symptoms. So you might be wondering if you're really COVID-negative or if the test is working as well as it should.

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