Add Yahoo as a preferred source to see more of our stories on Google. Getty Images; Alyssa Powell/BI Needle-free devices like TAP and Tasso offer painless blood collection, a benefit for the squeamish ...

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 ...

Imagine checking for colon cancer with nothing more invasive than a routine blood draw -- no bowel prep, no sedation and no awkward stool kit to mail. A new blood test called SHIELD is now available ...

This article was reviewed by Darragh O’Carroll, MD. Understanding Blood Tests: How They Work and What They Can Tell You Blood tests are one of the … ...

A blood test is a medical procedure where a sample of a person's blood is taken (called a blood draw) and sent to a lab for analysis. Knowing the results of blood tests helps a physician better ...