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.

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New COVID-19 restrictions for international travel and other activities are fueling consumer demand for highly accurate polymerase chain reaction, or PCR, tests with rapid turnaround times. Some ...

July 25 (UPI) --Scientists at Columbia University unveiled research Monday they said is "a step closer" toward bringing polymerase chain reaction, known as PCR, testing for COVID-19 and other viruses ...

Ducharme is a contributor to TIME. Ducharme is a contributor to TIME. If you had COVID-19 symptoms in 2020, you probably would have masked up and braved a visit to a laboratory, doctor’s office, or ...

1. Do at-home COVID tests actually work? Yes and no. Dr. Blaivas tells explains that the at-home tests that are currently available are designed to be simpler to use than big laboratory tests and ...