Gamma-Glutamyl Transferase

GGT Gamma GT
Serum (SST) U/L

About this test

Biliary enzyme. Sensitive marker for alcohol use and drug enzyme induction. Elevated alongside ALP strongly supports hepatic rather than bone source for raised ALP.

Reference Ranges

Sex Age Range Notes
Female ≥ 18 yrs 6 – 42 Adult female
Male ≥ 18 yrs 10 – 71 Adult male

Clinical Interpretation

High / Increased
Alcohol use, drug enzyme induction (phenytoin, rifampicin), liver disease (cholestasis, NAFLD), pancreatic disease.
Specimen
Serum (SST)
Reporting Unit
U/L

⚠ Clinical Note
Reference ranges are indicative. Always interpret results in the context of the individual patient and local laboratory reference intervals, which may vary.