When should you test for COVID? What if you're positive? Here's an explainer The federal government recently resumed its program of shipping out free COVID tests to households, which means many ...

False negative results are known to occur fairly frequently with rapid antigen COVID-19 tests and, to a lesser extent, with the more accurate RT-PCR tests.

If your COVID-19 rapid test turns positive, but the line is faint, unfortunately it still means you have COVID. However, a re-test might be in your future.

If your COVID-19 rapid test turns positive, but the line is faint, unfortunately, it still means you have COVID-19. However, a re-test might be in your future.

At-home testing is becoming a thing not just for COVID-19, but for flu and other infections. Here's what you need to know.

Each household is eligible for four at-home COVID tests, though those who did not take advance of September's round can get up to eight.