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, ...

These days, many people use at-home COVID-19 tests when they feel ill, rather than going out to get tested by a professional. (That’s when they bother to test at all.) But for all their convenience, ...

In a study involving nearly 1,000 patients seen at a Baltimore field hospital during a five-month period in 2022, researchers at Johns Hopkins Medicine, the University of Maryland School of Medicine, ...

People can test themselves about as accurately at home with rapid antigen coronavirus tests as health care professionals using the same tests, according to a Johns Hopkins Medicine-led study published ...

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 ...

As the COVID-19 pandemic enters its fourth year, a negative result on a little plastic at-home test feels a bit less comforting than it once did. Still, you dutifully swab your nostrils before dinner ...

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NAAT tests, including PCR tests, are more likely to detect the virus, and are considered the “gold standard” for COVID-19 tests. Samples are usually taken in a health-care setting and sent to a lab ...

"I would still say that distancing and outdoor air are your best friends," one leading public health expert told Insider.

2025 update: This federal program has ended and free tests are not current available from the government website. Federal health officials have justified the millions they have spent on device ...

As people attend indoor gatherings and prepare to travel this winter holiday season, cases of COVID in the U.S. have been tracking upward for the past month. This isn’t surprising—during the first ...