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 ...

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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 ...

Third-grade teacher Annie Long grappled with a new problem when her students reviewed the online practice test to prepare for the Common Core-aligned assessments they will be taking in a few weeks.

A false positive result is possible with a rapid COVID-19 test. It happens when a person does not have COVID-19 but still tests positive for the disease. People can use a rapid COVID-19 test at home ...

At-home COVID-19 tests are a key tool in containing the spread of the coronavirus. But a few safety precautions are in order to prevent serious injury, the U.S. Food and Drug Administration warns. The ...