Gamma-glutamyl transpeptidase

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Gamma-GT; GGTP; GGT

The normal range is 0 to 51 IU/L.

Note: IU/L = international units per liter

Greater-than-normal levels of GGT may indicate:

• Congestive heart failure
• Cholestasis (congestion of the bile ducts)
• Cirrhosis
• Hepatitis
• Liver ischemia (blood flow deficiency)
• Liver necrosis
• Liver tumor
• Use of hepatotoxic drugs (drugs toxic to liver)

Review Date: 01/22/2007
Reviewed By: Jenifer K. Lehrer, MD, Department of Gastroenterology, Frankford-Torresdale Hospital, Jefferson Health System, Philadelphia, PA. Review provided by VeriMed Healthcare Network.