Liver
GGT
An enzyme from the bile ducts, and the routine liver test most sensitive to alcohol.
Unit U/LTypical adult range < 60 U/L
What it is
An enzyme from the bile ducts, and the routine liver test most sensitive to alcohol.
Why it matters
It confirms whether a raised alkaline phosphatase is coming from the liver rather than from bone.
Reading the number
Many ordinary medications raise it. The direction across several tests means more than any single high value.
What moves it
alcoholmedicationsfatty liverweight change
When to raise it
Worth discussing a persistent rise, particularly alongside ALT.
Also known as
On a report in another language.
A lab report names this analyte in its own language. Vitals Vault recognises each of these and files them all under GGT.
Gama GTGama Glutamil TransferaseGamma-GTGamma-Glutamyltransferase
Catalog entry last updated 2026-08-27. Browse all 165 metrics.