What is GGT? GGT is an enzyme found in the liver — but what can your GGT level tell you about your health? Read More What is ALP? As part of our biomarker series, we look at alkaline phosphatase (ALP) and what it can tell you about your body. Read More What is albumin? You may have heard of the protein albumin – but what can it tell you about your body? Read More 1 2 3 4