GGT (gamma-glutamyl transferase) is an enzyme found mainly in the liver. It is one of the most sensitive markers for bile duct problems and alcohol-related liver damage.
Category: Liver Function
Also known as: ggt, gamma-glutamyl transferase, gamma gt, gamma-gt, ggtp, gamma glutamyl transpeptidase
Reference range: 8–61 U/L (Source: ABIM)
Standard unit: U/L
High values may indicate
High GGT may indicate bile duct obstruction, liver disease, alcohol abuse, pancreatitis, or use of certain medications such as anticonvulsants.
Low values may indicate
Low GGT is generally not a clinical concern and is usually considered normal.