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HelpTest Code LAB85 Gamma-Glutamyltransferase (GGT)
Useful For
Useful in the diagnosis and monitoring of hepatobiliary diseases. GGT is a biliary enzyme that parallels alkaline phosphatase in liver disease, but is not elevated in bone disease.
Methodology
Enzymatic Colorimetric (Szasz)
Performing Laboratory
Bozeman Health Laboratory Services
Specimen Requirements
Specimen Type: Plasma or serum
Container/Tube: Light-green top (lithium heparin gel), red top, or gold top
Specimen Volume: 1 mL
Specimen Minimum Volume: 0.5 mL
Specimen Rejection: Hemolyzed samples may be rejected.
Specimen Transport Temperature
Ambient/Refrigerated
Specimen Stability
| Specimen Type | Temperature | Time |
|---|---|---|
| Plasma or Serum | Ambient | 7 days |
| Refrigerated | 7 days | |
| Frozen | 1 year |
Reference Values
Females: 0-40 U/L
Males: 0-60 U/L
Day(s) Test Set Up
Monday through Sunday
Test Classification and CPT Coding
82977