Rapid COVID tests are convenient and easy to use because you can take them at home. But it's important to know how to interpret their results, when you should take another rapid test and when you ...

For instance, if you only get a very faint line, it might be hard to know whether or not that means your results are positive. I know how that feels firsthand. After more than two years of evading ...

You swabbed the inside of your nose and performed the at-home rapid antigen test for COVID-19 and thankfully, it was negative. Hold on. Do the test again, says the U.S. Food and Drug Administration, ...

Some 50% of people who test positive for Covid-19 on a rapid test after five days of infection are likely no longer contagious, a Journal of the American Medical Association study released on ...

WORCESTER – Anyone who gets a negative result for COVID-19 from an at-home rapid antigen test shouldn't assume they're not infected, and should keep testing, according to a safety recommendation ...

With Omicron subvariants continuing to evolve and spread, more and more people are testing positive for COVID across the US and Illinois. As of the latest update, eight counties in Illinois were ...

After a recent COVID-19 exposure, Dr. Christina Astley tested positive on an at-home test—but just barely. The line signifying a positive result was so faint that Astley, an endocrinologist at Boston ...

The FDA has extended the shelf life for some COVID-19 tests. Now that allergy season is here, many are finding themselves with symptoms asking: Is it allergies or a cold? COVID? Something else? Since ...

It was possible -- albeit rare -- for people not infected with SARS-CoV-2 to have persistent false positive rapid antigen COVID-19 tests, longitudinal data showed. Among a large cohort of over 11,000 ...

A Facebook user claimed that Minute Maid Peach Punch tested positive for COVID-19 on a rapid test. The test appeared to display positive results, but that doesn’t mean the test detected the virus.