Add Yahoo as a preferred source to see more of our stories on Google. For any American wondering if they have Covid-19, there are two kinds of tests available: polymerase chain reaction (PCR) and ...

It seems easy enough to take a COVID-19 test at home. But what if your results aren't so simple to interpret? If you get just ...

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To quickly confirm an asymptomatic case of COVID-19, a second rapid test within an hour of a positive result can boost the accuracy of the result from 38 percent to 92 percent, according to a new ...

With the newly dominant HV.1 strain of COVID-19 responsible for nearly one-third of cases in the US and the flu surging in at least seven states, it's safe to say that flu season has arrived with a ...

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 ...

NPR's Mary Louise Kelly talks with Dr. Wilbur Lam, a lead investigator assessing COVID-19 diagnostic tests for the U.S. government, about detecting the omicron BA.2 subvariant with rapid tests. The ...

Read the piece on Irene Bosch titled "This Scientist Created a Rapid Test Just Weeks Into the Pandemic. Here’s Why You Still Can’t Get It" here. In March 2020, right at the start of the COVID pandemic ...

If you stocked up on at-home Covid-19 rapid antigen testing kits during one of the Omicron-variant surges, you could be in for a surprise when you bust them out for a pre-holiday test: an expiration ...

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 ...