WebMD
Font Size
A
A
A

Gamma-Glutamyl Transferase (GGT)

Gamma-glutamyl transferase (GGT) is a protein (enzyme) that speeds up chemical reactions in the body. It is found mainly in the liver and the bile ducts.

A blood test to measure GGT levels is done to check for liver damage, especially damage caused by alcohol abuse. A GGT test is usually done along with other tests (such as alanine aminotransferase, or ALT) because it cannot usually tell what disease is causing the liver damage.

Gamma-glutamyl transferase is also called gamma-glutamyl transpeptidase (GGTP).

By Healthwise Staff
Primary Medical Reviewer Kathleen Romito, MD - Family Medicine
Specialist Medical Reviewer Brian D. O'Brien, MD - Internal Medicine
Last Revised April 5, 2010

WebMD Medical Reference from Healthwise

Last Updated: April 05, 2010
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
© 1995-2011 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.