Dr. Matt Binnicker, an expert in the diagnosis of infectious diseases, reviews scenarios where an at-home antigen test is a good option, and when to seek out a lab-based PCR. The omicron variant is ...

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 ...

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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.

Minute Molecular Diagnostics, a biotech spinout from Northwestern University that says it’s created rapid PCR COVID-19 tests, has received emergency use authorization for its product from the U.S.

Chinese scientists say they have developed a new coronavirus test that is as accurate as a PCR lab test but gives results within four minutes. Polymerase chain reaction (PCR) tests are widely ...

SAN FRANCISCO (KGO) -- Nearly 14,000 coronavirus tests were left sitting in bags in a Pleasanton-based lab. Now, customers are still waiting for their results nearly two weeks later. Here's what went ...

The COVID-19 pandemic has seen the rise and fall of many variants, but nothing like BA.5. Previous subvariants of omicron have caused cascading surges as they outcompeted each other; now, BA. 5 is the ...