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 ...

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 ...

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 ...

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 ...

The emergence of the omicron variant is spurring a scramble for COVID-19 lateral flow tests, to try and ensure safe holiday parties and family gatherings. The U.K. is dealing with a supply crunch for ...

A false positive result is possible with a rapid COVID-19 test. It happens when a person does not have COVID-19 but still tests positive for the disease. People can use a rapid COVID-19 test at home ...

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 emergence of the omicron variant is spurring a scramble for Covid-19 lateral flow tests, to try and ensure safe holiday parties and family gatherings. The U.K. is dealing with a supply crunch for ...