COVID-19 rapid tests are now widely available in New Hampshire, but some of these test kits warn that a negative result may not mean a test-taker doesn’t have COVID. How should someone taking a test ...

Users of at-home tests for COVID-19 may be less likely to follow CDC quarantine guidelines when using their testing kit instructions than with no instructions at all, a randomized trial found. In a ...

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 ...