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 ...

NEW YORK -- Millions of Americans have purchased rapid COVID-19 tests online or at local stores and signed up to receive test kits through a free government program. Unlike conventional, lab-processed ...

In early January, more than 700 Stanford University athletes took rapid Covid tests upon returning to the campus. Those who tested negative — and some who tested positive — were also given PCR tests.

Recent research indicates these nasal swab tests may be less sensitive to the coronavirus’ omicron variant in the earliest days of infection. A BinaxNOW rapid COVID-19 test made by Abbott Laboratories ...

Rapid at-home COVID-19 tests are flying off the shelves. But the cheapest over-the-counter COVID option is the Abbott Laboratories BinaxNOW two-pack for $23.99 — a much higher price than consumers in ...

COVID-19 at-home rapid testing is in high demand nationwide, as schools, businesses and travel open up with fewer and fewer restrictions. If you're searching for fast results, rapid tests let you know ...