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 ...

I made it through 2020 and most of 2021 without taking a rapid COVID-19 test. I got a couple PCR tests last year when I wanted to be sure I was healthy — after coming home from college to visit my ...

Add Yahoo as a preferred source to see more of our stories on Google. By now, most of us know the basics of taking a COVID-19 test at home. With cases, test positivity and hospitalizations due to ...

Thermo Fisher Scientific Inc. today announced the launch of a new rapid environmental test to help in the fight against COVID-19. The Thermo Scientific Renvo Rapid PCR Test is the latest solution in ...

ProPublica is a nonprofit newsroom that investigates abuses of power. Sign up to receive our biggest stories as soon as they’re published. Update, Nov. 17, 2021: The FDA announced it will prioritize ...

To help combat Omicron, the Biden administration is opening up more Covid-19 testing sites and delivering 500 million tests to Americans. WSJ’s Daniela Hernandez breaks down why testing is still a ...