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 ...

Every American traveling abroad needs to take an antigen test to return to the United States. But the start of the trip is often even more cumbersome, as many other countries (nearly every one I have ...

Finding a COVID-19 test has become a real challenge with the spread of the omicron variant. But there is also confusion over which test people should be getting, which is a PCR or antigen? “The two ...

MACON, Ga. — One Macon family is in quarantine after testing positive for COVID-19. They say this is a disappointment because their original tests came back negative. "I had a serious headache, back ...

Pathologic complete response (pCR) is not a reliable surrogate endpoint in trials evaluating neoadjuvant therapies for early breast cancer, according to a critical analysis of the literature. This ...