Reviewed: 16. April 2026
GGT Gamma-Glutamyl Transferase (GGT)
Unit: U/l
Quick Explanation
GGT (gamma-glutamyltransferase) is a liver enzyme that is particularly sensitive to alcohol and bile duct problems. Elevated levels can indicate fatty liver, alcohol use, or gallbladder disease. Persistently high levels should be discussed with your doctor.
📊 Reference Values
ℹ️ Reference ranges may vary slightly between laboratories. Always compare your value with the reference range from your own lab report.
🔍 Possible Causes
Value too high — possible causes
- ·Alcohol use
- ·Fatty liver disease
- ·Gallbladder disease
- ·Certain medications
- ·Obesity
This list shows possible causes — not a diagnosis. Only your doctor can correctly interpret your result.
🩺 Questions for Your Doctor
- →Could alcohol or medications have raised my GGT?
- →Do I need a liver examination?
- →What lifestyle changes could lower the value?
Have a complete lab report?
Medyra explains your entire lab report in plain language and prepares questions for your doctor appointment — free, in your language, in under 60 seconds.
Start for free →🔗 Related Lab Values
Medical Disclaimer
The content on this page is for general information only and does not replace professional medical advice, diagnosis, or treatment. Always consult your doctor or pharmacist for health-related questions. Lab values should always be assessed in the context of your personal medical history.