Polymerase chain reaction (PCR) and rapid (antigen) tests for COVID-19 both involve taking a swab. Results for a PCR test take longer, as it needs to go to a laboratory. It is more costly but tends to ...

Polymerase chain reaction (PCR) tests were the first available for spotting the coronavirus. They work by detecting the virus’s genetic material, and are very accurate. Then came rapid tests, also ...

A PCR test is often considered the gold standard for detecting coronavirus infection. It’s the test some employers want employees to take before returning to work after having Covid-19, and the one ...

A common rapid at-home COVID test has become the subject of a recent product recall over concerns the antigen test hasn't received proper U.S. authorization. The Food and Drug Administration issued a ...

Jan 10 (Reuters) - The fast-spreading Omicron variant has made us more reliant on rapid at-home antigen tests to tell us if we have COVID-19. But should we be swabbing our throats as well as our noses ...

Rapid COVID tests are convenient and easy to use because you can take them at home. But it's important to know how to interpret their results, when you should take another rapid test and when you ...

The U.S. government continues to push for more at-home screening to combat the spread of COVID-19 as a winter surge and the contagious delta and omicron variants have pushed the country’s daily case ...

Lateral flow devices, or lateral flow tests, have played a significant role in helping to identify infectious individuals during the coronavirus disease 2019 (COVID-19) pandemic. They have been key ...