COVID-19 tests are in greater demand than ever, and new data about the Omicron variant can make picking and using different types of tests confusing. Molecular tests for COVID-19, like the "RT-PCR" ...

A polymerase chain reaction (PCR) test detects genetic material from a pathogen or abnormal cell sample. Ways of collecting samples include a nasal swab, a saliva swab, or taking a sample of blood.

ATLANTA — As coronavirus research continues to evolve, so does the spread of misinformation. Now there's a new claim making the rounds and questioning the accuracy of COVID-19 testing. Our VERIFY team ...

A widely shared claim on social media has brought the Centers for Disease Control and Prevention's decision to retire its PCR test for COVID-19 back into the spotlight. "CDC Withdraws Use of PCR Test ...