Two types of COVID-19 tests, the rapid antigen test and the polymerase chain reaction (PCR) test, are available in the United States. The PCR typically relies on lab testing and is still considered ...

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 ...

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 ...

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 ...

What does it mean if a person's rapid antigen test result comes back positive after five days of isolation due to COVID-19? According to the experts, that person is most likely still carrying a viral ...

To quickly confirm an asymptomatic case of COVID-19, a second rapid test within an hour of a positive result can boost the accuracy of the result from 38 percent to 92 percent, according to a new ...

You've probably been hearing a lot about rapid COVID-19 testing lately. Some schools and workplaces are using rapid tests to monitor local transmission rates. Celebs like the Kardashians have even ...