When it comes to COVID-19, the perfect test unfortunately does not exist, so we must rely on a combination of approaches ...

The newly updated CDC guidelines don't require testing at the end of isolation because PCR tests can stay positive for up to 12 weeks, CDC Director Dr. Rochelle Walensky said.

There’s a big difference between the standard at-home antigen test and a molecular (PCR or NAAT) test. Molecular tests are the ones you want when accurate testing is important. Here are four ...

COVID-19 testing has spawned a veritable cottage industry, with medically minded entrepreneurs stepping up to meet increased demand — often charging top dollar to expedite PCR test results.

A PCR test isn’t even required to get a prescription for the antiviral Paxlovid. It may seem paranoid to plan ahead for a possible case of Long COVID—but the odds of getting it aren’t so long.

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 ...

Biondi says because the PCR test is so sensitive, we don’t typically see a false positive from it. “It’s a very sensitive test because it is looking for that actual material that the virus contains,” ...