Gamma Glutamyl Transpeptidase (GGT)


This fasting blood test is used to measure Gamma Glutamyl Transpeptidase (GGT) levels. Gamma Glutamyl Transpeptidase (GGT) is a biliary enzyme and may help determine liver and bile duct function. The liver is the main source of GGT however, GGT is also found in the kidney, spleen and pancreas.

Elevated GGT levels may be caused by liver disease, congestive heart failure, or alcohol, to name a few. Elevated levels off GGT may indicate liver damage, although it does not indicate the mechanism of injury.

Test Preparation For Optimal Results:

It is best to be fasting for approximately 9-12 hours prior to lab collection (without food or liquids except water).

Disclaimer: A health care provider should evaluate a deviation from normal ranges.