Diagnostic Blood Test:

GGT (γ-Glutamyl Transferase)

When the liver is damaged due to disease or alcohol use, it sends out the enzyme gamma-glutamyl transferase (GGT) into the bloodstream. Along with other tests like ALT and ALP (included in the Comprehensive Metabolic Panel), it can paint a picture of liver and bile duct health for people experiencing possible signs of liver disease such as low energy levels, nausea, or abdominal pain.