SAN FRANCISCO -- The recent outbreak of the omicron variant has many people running for the store for an over-the-counter rapid test. But simply taking the test once isn't enough to tell you if you ...

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 ...

A 2022 study estimates that at-home flu tests have a sensitivity of about 63% if the test is performed within 72 hours of ...

Many people, regardless of vaccination status, are going to become sick with coronavirus over the next couple of weeks. Because many of the recommendations from the U.S. Centers for Disease Control ...

Free test kits for COVID-19 are available to American households via the United States Postal Service. People can expect to see different testing brands arrive in their mail. The Biden administration ...

When it comes to rapid tests, there are reports that some people test positive for an extended period of time with the current strains of the omicron variant compared with earlier variants. Several ...

With COVID-19 cases rising across the country, you may be inclined to pull out one of those leftover at-home rapid tests received months ago from the Biden administration. Even if the box says the ...

It’s best to test for RSV soon after your symptoms start. That’s because you’ll likely have the most virus in your system then. As you get better, the amount of virus will go down. (Photo Credit: ...