Liver
GGT (Gamma-Glutamyl Transferase)
Unit: U/LID: M023
What This Test Measures
Liver enzyme; sensitive marker of liver stress and alcohol use
Conventional vs. Functional Optimal Range
Conventional "Normal"
0-51 U/LYour doctor says you're "fine" anywhere in this range
Functional Optimal
10-17 U/LThis is where you actually feel great
The gap between these ranges is why you feel terrible with "normal" labs. Conventional medicine waits for disease. Functional medicine optimizes for health.
Gabriel's Take
GGT is the MOST sensitive liver enzyme for oxidative stress and alcohol use. GGT >30 (even in "normal" range) predicts diabetes and cardiovascular disease. Gabriel's optimal band is 10-17. Elevated GGT = liver distress, often before ALT/AST rise.
When This Test Is High
Fatty liver, alcohol use, bile duct issues, oxidative stress
When This Test Is Low
Usually not clinically significant
Related Conditions
NAFLD, alcohol-related liver disease, cholestasis
Recommended Follow-Up
If elevated, reduce alcohol, check for fatty liver, assess oxidative stress; supplement NAC, milk thistle