Gamma-Glutamyl Transpeptidase

**Semantic type:** Amino Acid, Peptide, or Protein|Enzyme

**Definition:** GGT participates in the transfer of amino acids across the cellular membrane and in glutathione metabolism. High concentrations are found in the liver, bile ducts, and the kidney. A test that measures the amount of GGT in the blood is used to detect diseases of the liver, bile ducts, and kidney; and to differentiate liver or bile duct (hepatobiliary) disorders from bone disease.

**Synonyms:** - EC 2.3.2.2 - EC 3.4.19.13 - GGT - Gamma Glutamyl Transferase - Gamma-GT - Gamma-Glutamyltransferase