How do I know that my negative test result is accurate?

Every test has some room for error, known as “false negatives” or “false positives.” Tests that are granted Emergency Use Authorization (EUA) by the FDA must have a certain level of accuracy. There is also the possibility for user error. One way to be more sure about your negative test result is to take a second test at the same time or shortly after your first.
Learn more about diagnostic test accuracy.