Gamma-glutamyltranspeptidase
Order Code: GGT
Epic Lab Code: LAB85
Order Form: A-1a General Lab or Epic Req
Chemistry
6240 RCP
356-3527
Specimen:
Plasma
Collection Medium:
Plasma Separator Tube
Alternate Collection Media:
Call laboratory for additional acceptable specimen collection containers.
Minimum:
3 mL whole blood in light green top tube or ONE microtainer for pediatric patients
Testing Schedule:
24 hrs/day, 7 days a week, including holidays.
Analytic Time:
1 hour (upon receipt in laboratory)
Reference Range:
Male 8-61 u/l Female 5-36 u/l
Comments:
Elevated by drugs such as Phenobarbital and Dilantin. See reference range change.
Test Limitations:
Criterion: Recovery within plus or minus 10% of initial value. Icterus: No significant interference up to an I index of 35 (approximate unconjugated bilirubin concentration:35 mg/dL). Hemolysis: No significant interference up to an H index of 200 mg/dL (approximate hemoglobin concentration: 200 mg/dL). Lipemia (Intralipid): No significant interference up to an L index of 1000 mg/dL (approximate triglycerides concentration: 2000 mg/dL).There is poor correlation between turbidity and triglycerides concentration. Reference: Glick MR, Ryder KW, Jackson SA. Graphical Comparisons of Interferences in Clinical Chemistry Instrumentation. Clin Chem 1986;32:470-474.
Methodology:
Enzymatic
CPT Code:
82977
 
See also:
Gamma-glutamyltranspeptidase-Other, Body Fluid (e.g., surgical drain, pericardial, peritoneal, peritoneal dialysis, pleural, or synovial)