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 ...

In the age of omicron, where COVID’s attack rate is higher than previous variants, entire households and friend groups are getting sick. If one person gets COVID, there’s a good chance others in their ...

A COVID-19 rapid test that is said to be more sensitive than any other has been developed by scientists in the United Kingdom. It detects temperature changes when the virus binds to nanoparticles ...

A new study updates the state of knowledge about antigen rapid diagnostic tests (Ag-RDT) in the diagnosis of coronavirus disease 2019 (COVID-19), caused by the severe acute respiratory syndrome ...

For instance, if you only get a very faint line, it might be hard to know whether or not that means your results are positive. I know how that feels firsthand. After more than two years of evading ...

What does it mean if a person’s rapid antigen test result comes back positive after five days of isolation due to Covid-19? According to the experts, that person is most likely still carrying a viral ...

What does it mean if a person’s rapid antigen test result comes back positive after five days of isolation due to COVID-19? According to the experts, that person is most likely still carrying a viral ...

Last month, President Biden launched a website where Americans could order four free COVID-19 rapid tests to be shipped to their home. If you are unable to get the free rapid antigen tests, there are ...

The new findings are from an ongoing U.S. study that began in October and was designed to assess the performance of rapid antigen tests in asymptomatic people. By Emily Anthes Several rapid antigen ...

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 ...

How much should you trust the results of a rapid antigen test? That's a question many people are asking these days amid recent research and anecdotes suggesting these tests may be less sensitive to ...