At-home COVID-19 tests have become commonplace for many households, but knowing when exactly to take a rapid test — or when to throw old ones out — isn't always straightforward. Here's what health ...

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 ...

We’ve all heard the anecdotes: Your friend’s spouse or child gets COVID-19 — a known exposure to the virus, all the hallmark symptoms, a positive test, no question about it. Then your friend starts to ...

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 ...

Sander Brus didn't expect a photo of his friend's grandfather's flu diagnosis to go viral. But when he shared the image on Twitter in December, he was bombarded with messages, he said. People in the U ...

As fall temperatures set in, cold and flu season gets into full swing, and holiday travel picks up, people will undoubtedly have questions about Covid-19 testing. Is this the year people can finally ...

If you stocked up on at-home Covid-19 rapid antigen testing kits during one of the Omicron-variant surges, you could be in for a surprise when you bust them out for a pre-holiday test: an expiration ...

Taking a COVID-19 test at home seems simple enough: If you get a line, you're positive for the coronavirus. But what if your results aren't so obvious? For instance, if you only get a very faint line ...

They can result in false negatives, but they remain a valuable tool in stopping the spread of Covid-19. Here’s how to use them most effectively. By Dana G. Smith We’ve all heard the anecdotes: Your ...