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Gamma Glutamyl Transferase, Serum or Plasma
0020009
Ordering Recommendation

May be useful as an indirect marker of alcohol abuse; nonalcoholic fatty liver disease, drug intoxication, or other liver diseases.

Mnemonic
GT
Methodology
Quantitative Enzymatic
Performed
Sun-Sat
Reported
Within 24 hours
New York DOH Approval Status
This test is New York DOH approved.
Submit With Order
ARUP Consult®
Disease Topics
Specimen Required
Patient Preparation
 
Collect
Serum separator tube or plasma separator tube. Also acceptable: Pink (K2EDTA).  
Specimen Preparation
Allow serum tube to clot completely at room temperature. Separate serum or plasma from cells within 2 hours of collection. Transfer 1 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 0.2 mL)  
Storage/Transport Temperature
Refrigerated.  
Unacceptable Conditions
Grossly hemolyzed specimens.  
Remarks
 
Stability
After separation from cells: Ambient: 1 week; Refrigerated: 1 week; Frozen: 2 months  
Reference Interval
By report (reports may vary based on instrumentation)
Interpretive Data


Note
CPT Code(s)
82977
Components
Component Test Code*Component Chart NameLOINC
0020009Gamma Glutamyl Transferase2324-2
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • Gamma GT
  • Gamma-Glutamyl
  • Gamma-glutamyl Transpeptidase
  • Gamma-Glutamyltranspeptidase
  • GGT
  • GGTP
  • GT