While COVID-19 never fully went away the way many of us hoped it would when we were embracing Zoom happy hours and worked from home in March of 2020, ramped-up testing efforts have made it easier to ...

You wake up with a scratchy throat, runny nose, and persistent cough, but your at-home COVID-19 test reads negative. How is this possible? The short answer is yes—you can still be infected. Many other ...

Testing positive for COVID-19 is not exactly a positive experience. After all, wanting to go viral these days doesn’t tend to mean wanting to be infected by the severe acute respiratory syndrome ...

Hepatitis A blood tests check for immunoglobulin M (IgM) and immunoglobulin G (IgG) antibodies. An IgG-positive and IgM-negative result may suggest immunity to hepatitis A. A doctor may request a ...

You may get a PCR test, which can show a positive result for up to three months after recovery. If you take a rapid antigen ...