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GAMMA GLUTAMYLTRANSFERASE

Test Code
LAB85


Alias/See Also
GGT


CPT Codes
82977

Preferred Specimen
Plasma collected in a Green top/Gel Li Hep


Minimum Volume
1.0 mL


Transport Temperature
Refrigerated


Methodology
Enzymatic-Colorimetric

Setup Schedule
Set Up:Daily Report Available:8hours


Reference Range
GGT 7-51 IU/L


Clinical Significance
Gamma-glutamyltransferase measurement is principally used to diagnose and monitor hepatobiliary disease. It is currently the most sensitive enzymatic indicator of liver disease with normal values rarely found in the presence of hepatic disease. g-GT is also used as a sensitive screening test for occult alcoholism.1 Elevated serum g-GT levels are found in patients who chronically take drugs such as phenobarbital and phenytoin.


Performing Laboratory
GBMC Chemistry



The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.