Self-tests, or at-home COVID-19 tests, give instant results that PCR tests taken in a laboratory or medical office might take days to deliver, according to the Centers for Disease Control and ...

If you use an antigen test, a positive result is reliable, but a negative test is not always accurate. If your antigen test is negative, take another antigen test after 48 hours or take a PCR test ...

Currently available COVID-19 tests, including PCR tests, are designed to detect any version of SARS-CoV-2, and are not specific for different variants. When should I use an at-home test?

Each household is eligible for four at-home COVID tests, though those who did not take advance of September's round can get up to eight.

Hours-long lines for coronavirus PCR tests are prompting public officials to push the masses to use rapid, at-home antigen tests instead but public health experts warn the 15-minute tests are prone… ...

The point-of-care tests are a fast and cheap, though less accurate, way of detecting the virus compared to sending nasal swabs to a lab.