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 ...

A PCR test detects the actual genetic material of the virus and involves a step that amplifies the presence of any material ...

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 ...

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 ...

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 ...

WASHINGTON - U.S. regulators on Tuesday allowed emergency use of the first rapid coronavirus test that can be performed entirely at home and delivers results in 30 minutes. The announcement by the ...

PHILADELPHIA (WPVI) -- As the world was shielding itself from COVID-19 in 2020, Dr. Ping Wang and her team at the University of Pennsylvania's School of Medicine were studying it on a microscopic ...

Using expired COVID-19 tests is not recommended. If you have old COVID tests in your medicine cabinet, it may be tempting to use one. However, COVID tests do expire and may not be accurate after the ...

The Canadian province of Alberta is providing rapid COVID-19 tests for a pilot program at Suncor Energy Inc's <a href=" ...

Nothing puts a damper on your holiday plans like a positive COVID-19 test. But what if that line is super faint? Do you still have COVID-19 —or can you go ahead and attend your office party like you ...