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.

Polymerase chain reaction (PCR) and rapid (antigen) tests for COVID-19 both involve taking a swab. Results for a PCR test take longer, as it needs to go to a laboratory. It is more costly but tends to ...

A PCR test is often considered the gold standard for detecting coronavirus infection. It’s the test some employers want employees to take before returning to work after having Covid-19, and the one ...

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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 ...

While they've been the gold standard to identify positive coronavirus cases around the world for more than a year, PCR tests still aren't trusted by some social media users. An Oct. 4 Instagram post ...

With Christmas around the corner and COVID-19 case numbers rising, it’s important to keep getting tested when you have symptoms, have been exposed to the virus, or are going to a high-risk environment ...

Molecular tests are far superior to rapid antigen tests—and now you can get them for home use. Amanda Blum is a freelancer who writes about smart home technology, gardening, and food preservation.

Johns Hopkins researchers developed microdevices known as "theragrippers" that were designed to "latch onto intestinal mucosa and release drugs into the body" over an extended period of time. But they ...

Visby's multi-viral Medical Flu and Covid-19 test yields results in 30 minutes.