Polymerase chain reaction (PCR) tests were the first available for spotting the coronavirus. They work by detecting the virus’s genetic material, and are very accurate. Then came rapid tests, also ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Rapid tests are inexpensive, easy to use and give fast results, usually within 10 to 15 minutes. Violeta Stoimenova/E+ via Getty ...

The explosion of omicron cases in the U.S. smack in the middle of the holiday season is forcing Americans to rely more heavily on rapid tests prior to congregating with friends and family. In some ...

Rapid COVID tests are convenient and easy to use because you can take them at home. But it's important to know how to interpret their results, when you should take another rapid test and when you ...

Lateral flow tests (LFTs) are widely used across healthcare, food safety and environmental monitoring, providing rapid, on-site results. But challenges with sensitivity, flexibility and usability ...

When should you do a lateral flow test and when to take a PCR? As Coronavirus numbers rise in Scotland, you might want to make sure you aren't positive and at risk of passing it on to your loved ones, ...

The makers of at-home rapid Covid tests are scrambling to meet soaring demand as consumers prepare for holiday gatherings and tests are suddenly in short supply amid another coronavirus surge.