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 ...

Over-the-counter multiplex tests for more than one illness may soon come to a pharmacy near you. Paco Burgada/iStock via Getty Images A scratchy, sore throat, a relentless fever, a pounding head and a ...

After a recent COVID-19 exposure, Dr. Christina Astley tested positive on an at-home test—but just barely. The line signifying a positive result was so faint that Astley, an endocrinologist at Boston ...

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 ...

Share on Facebook. Opens in a new tab or window Share on Bluesky. Opens in a new tab or window Share on X. Opens in a new tab or window Share on LinkedIn. Opens in a new tab or window Adding a throat ...

Some people have said they have COVID-19 symptoms but test negative on rapid antigen tests. This may happen when it’s still early in the infection period and there’s not enough virus present. This may ...

People with asymptomatic or mild COVID illness generally test negative after nine days, but a polymerase chain reaction (PCR) ...

Molecular tests are far superior to rapid antigen tests—and now you can get them for home use. Last week, I was about to go on a date, and because I'm severely immunocompromised, we agreed he would ...

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. People can use a rapid COVID-19 test at home ...

SAN ANTONIO – Expecting a COVID-19 test in the mail? Don’t leave it in your mailbox too long, experts say. Heat and humidity could affect its accuracy. Bexar County’s current COVID-19 risk level is ...

Since the start of the pandemic, the FDA has issued emergency use authorizations to a whopping 444 diagnostic tests and sample collection devices to detect the COVID-19 virus. In recent months, ...

Duke has purchased additional rapid antigen tests for COVID-19 that are available at no charge to students, faculty, and staff through Duke Stores. Members of the Duke community only need to show a ...