How do rapid antigen COVID-19 tests work? Why did the US government just pledge to buy 280 million of them? And is that even enough to help curb the spread of the virus?

People are confused about coronavirus rapid tests — How good are they? When should you use them? Do they work? — all while the government is giving out free ones to households across the country.

Dr. Geoff Baird, a pathologist with the University of Washington Medical Center, said rapid antigen tests are a good go-to if you are feeling sick with symptoms of the virus.

RSV tests include nasal swabs or blood tests to detect the virus's genetic material or antibodies, but rapid tests provide quick results.

Testing has become more important than ever as people try to get their lives back to normal. But what's the best way to get tested, which tests are best, and are rapid antigen tests even accurate?

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 ...

It’s easy to avoid common pitfalls when taking rapid antigen tests. Here are a few to watch out for.

These are different than the rapid at-home antigen tests that return results on the spot.

A false positive result is possible with a rapid COVID-19 test. It happens when a person does not have COVID-19 but still tests positive for the disease.

Rapid tests work to detect omicron and its subvariants but timing is tricky. If you have COVID-19 symptoms, such as fever, cough, congestion or a sore throat, test yourself immediately but know ...

Demand for rapid antigen COVID-19 tests surging as omicron has people wanting to get tested. Here’s where you can find rapid tests in Miami-Dade, Broward. And how they differ from PCR test.