GGT stands for gamma-glutamyl transferase, an enzyme found in high levels in the liver, kidney, pancreas, heart, and brain. It's also present in lesser amounts in other tissues.
A GGT test measures the amount of this enzyme in your blood. Elevated GGT levels can be a sign of liver or bile duct problems, though they don't necessarily pinpoint the exact cause of the damage.
The test is often used to:
- Diagnose liver disease: Conditions like hepatitis, cirrhosis, and fatty liver disease can cause elevated GGT levels.
- Monitor liver health: GGT levels can help track the progression of liver disease or the effectiveness of treatment.
- Detect alcohol abuse: High GGT levels are often associated with heavy alcohol consumption.
Normal GGT levels in adults typically range from 0 to 30 IU/L, but this can vary depending on the lab and the individual.
It's important to note that factors other than liver disease can raise GGT levels, including:
- Medications
- Certain health conditions
- Obesity
If you have elevated GGT levels, your doctor will likely order further tests to determine the cause.
