Their makers claim they can detect dozens of cancer types — but some scientists say they could be missing many cancers or ...

A heartwarming Instagram video shows how a service dog accompanies his owner to a blood test. Named Waso, he seems to go through all the emotions when he notices his parent is getting her blood drawn.

Add Yahoo as a preferred source to see more of our stories on Google. Grail's Galleri test screens for more than 50 different types of cancer from a single blood draw. (Getty Images) (Getty Images) If ...

"No cancer signal detected." The blood test results popped up in my online health portal without much fanfare. A doctor would chat about them with me later, congratulating me on the "phew"-worthy ...

This article was reviewed by Darragh O’Carroll, MD. Blood tests are one of the most widely used and helpful tools in modern medicine. Whether ordered in a clinic or done through an at-home kit, they ...