For Rachel Robles, getting diagnosed with Long COVID was an uphill battle. She caught the virus in March 2020, when nearly nothing was known about its long-term effects and testing was inaccessible ...

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 ...

In the rush to get at-home tests on the market, they were released with short shelf lives on their packaging. But some have ...

There are three different ways to test for COVID-19: PCR tests, antigen tests and antibody tests. Each method is best for a different stage of COVID-19 infection. Used in sequence, all three methods ...

This decision, well within current norms for care, was nonetheless consequential: The president was forced to cancel a trip to advocate for legislation in support of the domestic semiconductor ...

July 25 (UPI) --Scientists at Columbia University unveiled research Monday they said is "a step closer" toward bringing polymerase chain reaction, known as PCR, testing for COVID-19 and other viruses ...

A new highly sensitive, easy-to-use test for COVID-19 that requires a single swab and 15 minutes has received emergency use authorization (EUA) status from the U.S. Food and Drug Administration (FDA).

Dogs are as reliable as laboratory tests for detecting COVID-19 cases, and may be even better than PCR tests for identifying infected people who don’t have symptoms. A bonus: The canines are cuter and ...

The FDA has issued emergency authorizations to 12 antibody tests for the virus. As federal officials gradually begin reopening the country, expanded testing is central to the conversation. Until now, ...

Yes, the experts agree. If you performed the test correctly, a faint line on a COVID test is still a positive result. "Any ...