Not sure how to do a rapid antigen test? Check out this video that shows how to correctly perform a basic rapid antigen test. There are different self-test kits available so make sure you follow the instructions provided with the test. Rapid antigen tests are great to use if you’ve got no symptoms and are heading to a large gathering or visiting vulnerable people. If your rapid antigen test result is positive, you must get a PCR test to confirm and self-isolate while you wait for your result. If