PCR tests must be performed in a medical setting, and results can take days. Rapid antigen tests are typically less expensive, produce results within 30 minutes, and can be done at home.

At-home COVID-19 tests have become commonplace for many households, but knowing when exactly to take a rapid test — or when to throw old ones out — isn't always straightforward. Here's what ...

While at-home covid tests were nearly impossible to find back in 2020, it’s easier than ever in 2025.

The best time to take an at-home COVID-19 test may be on the fourth day of having symptoms, according to a new study.

A negative result from a COVID test in a medical setting is more accurate than a negative result from an at-home test, ...

Gene-cutting diagnostic tests could be as easy as a rapid COVID test and as accurate as PCR ...

New research from the U of A could lead to an inexpensive, at-home COVID-19 test that uses liquid crystals to deliver results in less than two minutes.