At-home rapid tests for COVID-19 are more convenient. But experts say there are still times when a PCR test is useful.

RSV tests include nasal swabs or blood tests to detect the virus's genetic material or antibodies, but rapid tests provide quick results.

Dr. KC Coffey, Epidemiologist at the University of Maryland School of Medicine, discusses the differences between PCR Covid testing and rapid testing.

Experts say rapid home tests still work to detect the latest variants of the virus that causes Covid-19, but how and when home tests are used has changed.

The discrepancies between tests and the lengths of their positive results boil down to what each test looks for and how sensitive it is. PCR tests are highly sensitive and are good at detecting ...

One of the key strengths of this study design is to provide detailed insight into the symptom burden and QoL before, during, and after a positive and negative COVID-19 PCR test.

You’ve been exposed to COVID and are starting to get symptoms. But after a couple of days of testing with rapid antigen tests (RATs), your tests remain negative. Mass PCR testing has been scaled ...