What GGT tells you
Liver enzyme and protein markers that reflect aspects of liver activity. They are interpreted together, and in context, by a clinician.
Which Honed panels include GGT
GGT is measured in the Essential Panel. Every sample is collected at a pathology collection centre and processed at a NATA-accredited laboratory against RCPA reference ranges, with personalised plain-English commentary in your secure online report.
Why GGT matters
Gamma-glutamyl transferase (GGT) is an enzyme found in the liver, kidney, pancreas, and intestines. It is used as a marker of liver and pancreatic function and is particularly sensitive to alcohol and fatty liver disease. GGT is one of the early markers of liver dysfunction. In athletes, GGT is monitored as part of assessing overall liver health and alcohol consumption patterns.
The range explained
Low levels
Low GGT is not clinically significant.
Normal range
Reference range: 9–48 U/L. This represents normal liver enzyme levels.
High levels
Elevated GGT (above 48 U/L) is typically associated with alcohol consumption, fatty liver disease, or other hepatic dysfunction.
What affects GGT
- Training: Training does not directly affect GGT.
- Nutrition: Alcohol is the primary driver of elevated GGT. High-fat, high-sugar diets promote fatty liver disease and elevate GGT.
- Sleep: Sleep supports liver health.
- Stress: Chronic stress can elevate GGT through multiple pathways.
When to retest
Every 12 months for general health.
Why athletes care
Athletes monitor GGT as a marker of liver health and alcohol consumption; elevated GGT indicates potential liver stress or excessive alcohol intake.
Related liver markers
FAQ
What does the GGT blood test measure?
Gamma-glutamyl transferase, a liver enzyme that can be affected by alcohol and other factors. It is interpreted alongside other liver markers by a clinician.
Which Honed Health panels include GGT?
GGT is included in the Essential panel.
What unit is GGT measured in?
GGT is reported in U/L, measured at NATA-accredited laboratories against RCPA reference ranges, with personalised plain-English commentary in your secure report.