Reviewed: 16. April 2026
GPT/ALT Alanine Aminotransferase (ALT)
Unit: U/l
Quick Explanation
GPT/ALT (alanine aminotransferase) is a liver enzyme. Elevated levels can indicate liver inflammation or damage, for example from alcohol, medications, or fatty liver disease. Discuss mildly elevated results 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
- ·Fatty liver disease
- ·Alcohol use
- ·Viral hepatitis
- ·Medication side effects
- ·Heart disease
This list shows possible causes — not a diagnosis. Only your doctor can correctly interpret your result.
🩺 Questions for Your Doctor
- →Could a medication have raised my GPT/ALT level?
- →Should I have an ultrasound of the liver?
- →What can I do to improve my liver values?
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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.