Gamma-Glutamyl Transferase (GGT) is an enzyme that primarily exists in the liver. It plays a crucial role in the metabolism of glutathione and the transfer of amino acids and peptides across the cellular membrane. GGT is often measured in blood tests as a marker of liver health. Elevated levels of GGT are commonly associated with liver diseases, such as hepatitis, cirrhosis, and liver damage due to alcohol or drug use. It can also indicate bile duct problems. Because GGT levels increase with alcohol consumption and certain medications, it is also used to monitor alcohol abuse and adherence to certain medications. Low levels of GGT are generally not a concern and are less commonly noted in clinical practice.

Gamma-Glutamyl Transferase (GGT)

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