Gamma-Glutamyl Transferase (Ggt)




Gamma-glutamyl transferase (GGT) is an enzyme that is found in many organs throughout the body, with the highest concentrations found in the liver. GGT is elevated in the blood in most diseases that cause damage to the liver or bile ducts. This test measures the level of GGT in a blood sample.

A GGT test may be ordered when someone has an elevated ALP level. An ALP test may be ordered alone or as part of a routine liver panel to screen for liver damage, even if no symptoms are present. GGT may be ordered along with or as a follow up to other liver function tests when a person has signs or symptoms that suggest liver disease.

Requirements: None

CPT Code:  82977

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