RT-PCR tests are very accurate when properly performed by a health care professional, but the rapid test can miss some cases. Antigen ... test does not completely rule out having the COVID-19 ...

the antigen tests. They look for a protein fragment of the coronavirus, and they give you the results in 15 minutes. They're not as accurate as the PCR test, and you do need to have adequate viral ...

The COVID-19 mRNA vaccines have passed many tests in labs and in thousands of people, and meet strict standards from the FDA. So how do these vaccines work? First, a COVID-19 mRNA vaccine is ...

The two types of COVID-19 tests – antigen and PCR – work in very different ways, which is why one is fast but less accurate and the other is slow and precise. The pilot of mass testing people ...

If you’re unlucky enough to be in hospital with suspected Covid-19 ... antibody tests which are used to show whether someone has had the virus, not whether they currently do.