SAN FRANCISCO -- A new commercially available test called T-Detect has received emergency use authorization from the FDA. The manufacturer says it has the power to tell most patients whether or not ...

How much protection do you currently have against COVID-19? The answer depends on so much: whether you’ve already had COVID-19 (and if so, how long ago); whether you’ve been vaccinated (and if so, how ...

While they've been the gold standard to identify positive coronavirus cases around the world for more than a year, PCR tests still aren't trusted by some social media users. An Oct. 4 Instagram post ...