It’s important to note that most rapid tests are antigen tests, and while a few molecular rapid tests are available, they are not PCR tests — they perform a different type of molecular test that’s ...

I was an early believer in the usefulness of at-home rapid COVID tests. Used correctly, they can decrease the spread of COVID-19. The Biden administration announced last week that free tests will once ...

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 ...

Mahmoud Illean / AP As the COVID-19 pandemic enters its fourth year, a negative result on a little plastic at-home test feels a bit less comforting than it once did. Still, you dutifully swab your ...

Medically reviewed by Kate Colby, MPHYou may get a PCR test, which can show a positive result for up to three months after recovery. If you take a rapid antigen test, it may not detect COVID after ...

Welcome to what some experts say is the country’s second largest COVID wave since the start of the pandemic. In the past few weeks, there’s been a striking increase in new cases, hospitalizations, and ...

Most of us have taken a COVID test at home. The uncomfortable nasal swab, the anxious waiting as the red lines bleed into either positive or negative. And then finally, the result. The whole process ...

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 ...

A study led by Osaka University recently found that the sensitivity of rapid antigen tests (RATs) for the Omicron variant of COVID-19 when compared with polymerase chain reaction (PCR) tests was 0.63 ...

The Wisconsin Health Department has expanded its "Say Yes! COVID Test" program so that double the number of free tests can now be ordered each month. Households can now order two boxes per month ...