There's still a lot of confusion around the best time to take a COVID test and where to get them. Here, experts share their ...

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 ...

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 ...

At-home rapid COVID-19 tests can reveal more about viral load than a simple positive/negative result, according to experts. "By definition, the basic technology suggests that you somehow have to go ...

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, ...

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 ...

The Czech Republic should begin offering free antigen tests for COVID-19 for all who want them from Dec. 18, Health Minister ...

New dengue antigen test delivers high clinical sensitivity and specificity, as well as inclusivity for all four dengue virus ...