Sunquest Code:GGT  
Epic Code:LAB85Epic Name:GGT
Synonyms:Gamma Glutamyltransferase; Gamma-Glutamyltranspeptidase; Gamma Glutamyl Transpeptidase (GGTP); Gamma-Glutamyltransferase
Methodology:Bichromatic rate
Turnaround Time:Performed and reported 24 hours/day.

Collection Instructions

Optimal Volume:2.5 mL
Minimum\Peds Volume:0.6 mL
Container:Green (lithium heparin, gel) (Green (lithium heparin) on ICE, Red (no gel), Red or gold (gel))
Causes for Rejection:Hemolysis

Processing and Shipping

Specimen Processing:Centrifuge and aliquot within 2 hours of collection 1.25 mL, 0.2 mL minimum. Store in refrigerator.
Shipping Instructions:Ship at refrigerated temperature.
Stability:Stability: Room or refrigerated temperature - 7 days; frozen - 6 months.
Test Performed at or Referral Lab Chemistry  (University of Minnesota Health Maple Grove Clinics, UMMC-East Bank, Oxboro Bloom, Fairview Lakes - FLMC, Fairview Ridges - FRH, Fairview Northland - FNMC, Fairview Southdale - FSH, UMMC/UMMCH-West Bank, Fairview Clinics, Grand Itasca GICH)


Reference Range:
Age Female Male
0 - 4 d 0-263 U/L 0-263 U/L
5 d - 2 mo 0-130 U/L 0-130 U/L
3 - 11 mo 0-65 U/L 0-65 U/L
1 - 11 y 0-30 U/L 0-30 U/L
12 - 19 y 0-30 U/L 0-44 U/L
20 y and older 0-40 U/L 0-75 U/L
 GICH: All ages (female and male) 9-64 U/L  
Use:Suspect hepatic disease.

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