The rapid antigen test is considered to be a screening tool. In other words, it can indicate that you might be infected, but a PCR test is needed to confirm the result.

TESTING for COVID-19 needs to "adapt" to the new variant, an expert has warned as the Omicron variant is "very different" to others.

You can order a COVID-19 test online through DoorDash and get same-day delivery. Here's how to do it.

Fact check: Should you swab your throat AND nose for rapid at-home test, for PCR test? Experts are split, and here's why.

A recent real-world study that followed 30 subjects likely exposed to omicron found that PCR saliva tests can catch Covid-19 cases three days before rapid antigen tests, which use nasal swabs.

The FDA says it’s important to carefully follow the instructions on self- or at-home tests, because failing to properly swab or handle the sample could lead to an inaccurate result.

“Particularly if you don’t have symptoms.” The PCR tests, in which a sample is collected with a deep nasal swab, have a higher sensitivity to detect the coronavirus.