A PCR test is considered the gold standard for detecting coronavirus infection after exposure to Covid-19 or while you’re experiencing symptoms. Coronavirus test experts explain why the rapid ...

Though the PCR tests we have today can't definitively screen for Omicron, Dean said it's possible that because of the vast array of new mutations that Omicron exhibits, new tests could be designed ...

Now, the primary holdup is simply one of supply and demand. The PCR test requires specialized supplies, expensive instruments, and the expertise of trained lab technicians.