PCR tests are one of the most accurate forms of testing for the coronavirus. PCR stand for polymerase chain reaction test. There are many different reasons why you may need to book a covid test, for ...

While experts advise people who think they may have COVID-19 to test on day 1 of symptoms, a new study suggests that for people using home (rapid) kits, testing again on day 4 may yield the most ...

Infectious disease expert Dr. Mark Kortepeter explains the pros and cons of at-home Covid diagnostic tests and how to interpret the results.

If a rapid test produces a negative result but you have a cough, fever or other symptoms, the CDC recommends you also do a PCR test.

The PCR test, which involves replicating a segment of COVID-19 DNA, is distinct from human cloning. In addition, the paper cited as evidence predates the pandemic and is unrelated to human cloning.