A GGT (Gamma-Glutamyl Transferase) test measures this enzyme found primarily in the liver and bile ducts. GGT is particularly sensitive to alcohol use and bile duct disorders, making it useful for evaluating liver problems.
What This Test Measures
GGT (Gamma-GT):
An enzyme that helps transport amino acids across cell membranes. GGT is found mainly in liver and bile duct cells. It’s very sensitive to liver stress from alcohol, medications, and bile duct obstruction.
Reference Ranges
• Men: 8-61 U/L
• Women: 5-36 U/L
Who Should Consider This Test
• Evaluating cause of elevated alkaline phosphatase (ALP)
• Suspected alcohol use disorder
• Monitoring recovery from alcoholism
• Bile duct disease evaluation
• Medication-induced liver injury
• Follow-up to abnormal liver function tests
Key Uses of GGT
Distinguishing Source of Elevated ALP:
• ALP elevated + GGT elevated = Liver/bile duct origin
• ALP elevated + GGT normal = Bone origin
Alcohol Marker:
GGT rises with regular alcohol use and can remain elevated for weeks after stopping. It’s often used to monitor alcohol abstinence.
What Elevated GGT May Indicate
• Alcohol use (even moderate)
• Bile duct obstruction
• Hepatitis
• Fatty liver disease
• Certain medications
• Congestive heart failure
• Diabetes
How It Works
1. Order your test online – no doctor visit required
2. Visit any Quest Diagnostics location nationwide
3. Simple blood draw takes approximately 5 minutes
4. Results delivered to your secure portal within 1-2 business days
Preparation
No fasting required. Alcohol can elevate GGT, so results reflect recent alcohol consumption.
Related Tests to Consider
• Alkaline Phosphatase – Evaluate alongside GGT
• Liver Function Panel – Complete liver assessment
• Comprehensive Metabolic Panel – Overall health picture
Why Choose Wittmer Rejuvenation Clinic
At $15, our GGT test is affordably priced. We partner with Quest Diagnostics for reliable, CLIA-certified laboratory testing.
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