A simple blood test may identify people who have an increased risk of dying from cardiovascular disease, researchers report in Circulation: Journal of the American Heart Association. The test measures ...

Doctors use the gamma-glutamyl transferase (GGT) blood test to diagnose liver problems. High levels of GGT can indicate damage to the liver or bile ducts, or other conditions. A typical range for GGT ...

Enzymes are highly specialized complex proteins that aid chemical changes in every part of the body. For example, they help break down food so your body can use it effectively. They also help your ...