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, ...

It was possible -- albeit rare -- for people not infected with SARS-CoV-2 to have persistent false positive rapid antigen COVID-19 tests, longitudinal data showed. Among a large cohort of over 11,000 ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." TAKING A COVID-19 TEST is probably your first instinct when you wake up with a fever or sore throat or ...

Countries straining to contain a second wave of COVID-19 are turning to faster, cheaper but less accurate tests to avoid the delays and shortages that have plagued efforts to diagnose and trace those ...

Most of us have taken a COVID test at home. The uncomfortable nasal swab, the anxious waiting as the red lines bleed into either positive or negative. And then finally, the result. The whole process ...

The question quickly arose whether existing rapid antigen tests could detect newly emerging variants. Using clinical samples obtained from diagnostic labs throughout the U.S. from 2020 to 2023, the ...

The Food and Drug Administration (FDA) has cleared ACON Laboratories’ Flowflex COVID-19 Antigen Home Test, the first over-the-counter (OTC) antigen test. Previously, the test was authorized for ...

COVID cases are starting to creep up again in the U.S., and it’s understandable to have new questions about the virus and the newest CDC guidance on isolation after a positive test. After all, it’s ...

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 ...

Fast but less accurate "rapid antigen tests" now account for 60% of all coronavirus tests in India, the head of a top diagnostic firm estimated on Wednesday, warning that such a high use could ...