In general, rapid antigen tests are less sensitive and therefore less likely to detect an infection compared with polymerase chain reaction (PCR) tests. PCR tests look for viral genetic material, ...

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?

There are three different ways to test for COVID-19: PCR tests, antigen tests and antibody tests. Here are the differences.

Using an over-the-counter antigen test to find out if you have COVID-19 is helpful, if you use it correctly and repeatedly.

Previously, the test was authorized for emergency use in 2021. The Flowflex COVID-19 Antigen Home Test is a nasal swab test for at-home use by symptomatic individuals within 6 days of symptom onset.

After exposure to COVID-19, most infections become detectable within 3–7 days. Testing too early can yield false negatives, ...

BinaxNow COVID-19 Antigen Self Test from Abbott Diagnostics Scarborough. CareStart COVID-19 Antigen Home Test from Access Bio. Celltrion DiaTrust COVID-19 Ag Home Test from Celltrion USA.

Our top picks for the best at-home COVID-19 tests include in-store and online options that are FDA-authorized for accurate results. Find the best option for your needs with our top recommendations.

Test as close to the time of the event as possible (at least within 1-2 days). If you use an antigen test, follow recommendations for repeat testing to be confident in a negative result.

Feeling ill and considering using one of those free COVID tests that’s been sitting around? Here’s how to know if it’s still good – even if it’s past the expiration date.

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