GGT Evaluator
Metabolic Relevance
GGT is a sensitive marker of oxidative stress and liver function. Elevated levels often precede other liver enzyme elevations and can indicate metabolic dysfunction, fatty liver, or toxic burden.
Recommended testing frequency:
Annually together with ALT, or every 3 months if metabolic syndrome is present
Did you know?
GGT is involved in glutathione metabolism — your body's main antioxidant. Even within the "normal" range, higher GGT values are associated with increased cardiovascular risk and all-cause mortality.
GGT is extremely sensitive to alcohol consumption. Even moderate intake can elevate levels. It often rises earlier than other liver enzymes, making it an early warning sign.
Want to understand your result better?
Learn about interpretation, what affects your score, and evidence-based strategies to improve it.
Read the full guideEvidence-Based
This calculator is based on peer-reviewed research validated across thousands of clinical studies.
View scientific references(10)Medical Disclaimer
Why Optimal Thresholds Differ?
Standard Medical
⚠️ Wide range designed to detect clinical disease
Research Consensus
✓ Lower values associated with better outcomes
Metabolic Optimization
🔬 Minimal oxidative stress and cardiovascular risk