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Quest / Liver Function
Gamma Glutamyl Transferase (GGT)
### A gamma glutamyl transferase (GGT) lab test measures the level of the GGT enzyme in the blood, which is involved in liver function and bile duct health. Elevated GGT levels can indicate liver damage or disease, bile duct obstruction, or...
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What this lab measures
### A gamma glutamyl transferase (GGT) lab test measures the level of the GGT enzyme in the blood, which is involved in liver function and bile duct health. Elevated GGT levels can indicate liver damage or disease, bile duct obstruction, or...
How testing works
Order online
Choose your marker and add a brief medical history so your result has context from the first draw.
Visit a partner lab
Take your order to a certified Quest location for a short blood draw.
Clinician review
A licensed clinician reviews your result and shares clear interpretation with next steps.
FAQ
After ordering, visit a certified Quest partner location for a short blood draw. No insurance is required.
Feelrx / Start here
Know your baseline.
Order a panel online, draw at a certified partner lab, and receive a clear clinician review.
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