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 ...

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 ...

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 ...

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 ...

In many parts of the world, rapid COVID-19 testing is part of daily life. Despite the FDA emergency use authorization and the advocacy of many infectious disease and public health experts calling for ...

Facing long lines and shortages of home test kits during the latest surge, people are searching for answers about Covid tests. By Tara Parker-Pope Dani Blum and Nicole Stock Testing is essential to ...

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 ...