Gamma Glutamyl Transferase (GGT)
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Test Code: 482
CPT Code(s): 82977
Methodology: Spectrophotometry (SP)
Clinical Significance: Elevated GGT is found in all forms of liver disease. Measurement of GGT is used in the diagnosis and treatment of alcoholic cirrhosis, as well as primary and secondary liver tumors. It is more sensitive than alkaline phosphatase, the transaminases, and leucine aminopeptidase in detecting obstructive jaundice, cholangitis, and cholecystitis. Normal levels of GGT are seen in skeletal diseases; thus, GGT in serum can be used to ascertain whether a disease, suggested by elevated alkaline phosphatase, is skeletal or hepatobiliary.
Alternative Name(s): GGT; GGTP; Gamma Glut. Transpeptidase; Gamma Glutamyl; Gamma GT; GTP; SGGT
Supply: T01 - Red/Gray SST 8.5mL
Preferred Specimen: Serum
Preferred Volume: 1mL
Transport Container: Serum Separator Tube (SST)
Transport Temperature: Room Temperature
Specimen Stability: Room Temperature: 7 days
Rejection Criteria: Plasma
For additional supply or collection device information, please contact DLO's Customer Service at (800) 891-2917, option 2.
The CPT codes provided 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.
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