Additionally, symptomatic people tend to have higher viral loads, which are more detectable on a rapid antigen test, than asymptomatic people, who typically have lower viral loads.

The Covid-19 rapid antigen tests are very fast and convenient, but how often do they give false results? Two new studies yield some answers.

What is the difference between a PCR and a rapid test? Rapid antigen tends to be the test for over-the-counter or at-home COVID-19 tests. You can buy them in most pharmacies.

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 ...

How much can I trust a rapid antigen test? Although PCR tests are generally more reliable, at-home antigen testing can still be useful if you know what to look for.

False positives are thought to be much less common. Soni said that false positive COVID-19 antigen test results have not been previously described before as a potential systematic issue.

Many of us have taken a rapid antigen test (RAT) or have administered them to our school-aged children. But how many of us are using them correctly? Here are 15 pitfalls to avoid if you want to ...

Experts discuss what it might mean if you get a faint line on a home COVID-19 test, when to take another test and what precautions to take.

If a person’s rapid antigen test result comes back positive after five days of isolation due to COVID-19, experts say they are most likely still carrying a viral load high enough to infect others.

What does it mean if a person’s rapid antigen test result comes back positive after five days of isolation due to Covid-19?

Experts agree that rapid antigen test kits can show degrees of infectiousness ...