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 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 ...

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 ...

Scientists at UC San Diego Health have teamed up with an Escondido company to develop a new rapid test for the coronavirus that causes COVID-19 that can be scaled up to analyze as many as 100,000 ...

Whether you’re testing before heading back to work or want to check your own Covid status before traveling or heading to an event, there are a number of good rapid Covid tests that you can buy online ...

Rapid tests are a quick and convenient way to learn about your COVID-19 status. The timing, temperature, and even what you eat before getting tested could affect your results. Recent studies suggest ...