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 ...

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 ...

Max Hamilton found out that his roommate had been exposed to the coronavirus shortly after Thanksgiving. The dread set in, and then, so did her symptoms. Wanting to be cautious, she tested ...

During the early stages of the coronavirus disease 2019 (COVID-19), rapid testing was imperative for public health policymakers and health care workers in order to determine where and what measures ...

The explosion of omicron cases in the U.S. smack in the middle of the holiday season is forcing Americans to rely more heavily on rapid tests prior to congregating with friends and family. In some ...