---
title: "Gamma-Glutamyl Transferase (GGT) Test: What It Measures"
description: "A GGT test measures a liver and bile-duct enzyme that often rises with alcohol use, medications, or cholestasis—order with Quest via Vitals Vault."
canonical: "https://www.vitalsvault.com/biomarkers/gamma-glutamyl-transferase-ggt"
last-updated: 2026-08-22
---

# Gamma-Glutamyl Transferase (GGT) Test: What It Measures

> A GGT test measures a liver and bile-duct enzyme that often rises with alcohol use, medications, or cholestasis—order with Quest via Vitals Vault.

---

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