Clarilab

Liver

GGT test

Also called gamma GT

A liver enzyme sensitive to alcohol and bile duct problems.

Typical range
About 10–45 U/L.
Usual recheck
About 3 months when out of range

Why it's done

Helps explain a high ALP, or checks alcohol-related liver strain.

What a high result can mean

Alcohol, fatty liver, bile duct blockage or some medicines.

Got a report with GGT?

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More liver tests

Liver function test (LFT)ALT, AST, ALP, GGT, bilirubin, total protein and albumin. ALT (SGPT)A liver enzyme released when liver cells are irritated or damaged. AST (SGOT)An enzyme found in the liver, heart and muscles. Alkaline phosphatase (ALP)An enzyme from the liver, bile ducts and bones. Bilirubin (total)A yellow pigment from the normal breakdown of red cells, cleared by the liver. Bilirubin (direct)Bilirubin the liver has already processed.