GGT (Gamma Glutamyl Transferase)
GGT is sensitive for bile duct and liver disease. Often elevated with alcohol use even before other liver enzymes rise. Used with ALP to determine if ALP elevation is from liver or bone.
Test Information
Reports In
Same day (6 hours)
Parameters
1
Requisites
Blood Sample
Sample Type
Blood
Measures
Gamma glutamyl transferase enzyme level
Identifies
Bile duct disease, alcohol use, liver damage
What is the GGT Test?
Gamma-Glutamyl Transferase (GGT) is a liver enzyme that is the most sensitive marker for alcohol-related liver damage and bile duct disease. GGT rises earlier and more significantly with alcohol use than other liver enzymes. It's also useful for confirming that elevated ALP is from the liver (not bones).
Why Should You Take This Test?
Most sensitive enzyme for bile duct issues. Helps interpret ALP – if GGT is high, ALP elevation is likely liver-related.
Who Should Get Tested?
Alcohol Users
GGT is the earliest and most sensitive marker of alcohol liver damage.
Elevated ALP on LFT
Confirms liver (not bone) origin of elevated ALP.
Bile Duct Disease
GGT is highly sensitive to bile duct obstruction.
Medication Monitoring
Some drugs elevate GGT.
Warning Signs — When Should You Get This Test?
Common Conditions Detected
Frequently Booked Together
Tests commonly ordered alongside GGT for a complete picture
LFT (Complete)
Full liver function assessment
ALP
GGT confirms liver origin of elevated ALP
Ultrasound Abdomen
Visualize liver and bile ducts
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