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 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.

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 ...

Researchers often call the polymerase chain reaction test – known as the PCR test – "the gold standard" for detecting the COVID-19 virus. The test is considered highly reliable and effective, and it ...

Northwestern scientists have created the fastest-ever hepatitis C diagnostic, delivering accurate results in only 15 minutes.

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" ...

Molecular tests are far superior to rapid antigen tests—and now you can get them for home use. Last week, I was about to go on a date, and because I'm severely immunocompromised, we agreed he would ...

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 ...

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 ...