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HelpTest Code GGT Gamma-Glutamyl Transferase
Additional Codes
| EPIC | LAB4093 |
Synonyms
- GGT
- GGTP
- Gamma-Glutamyltranspeptidase
Clinical Significance
gamma-glutamyl transferase measurements are used in the diagnosis and treatment of liver diseases such as alcoholic cirrhosis and primary and secondary liver tumors.
Source: Beckman Coulter Unicel, GGT IFU. REF #442620, #476826 12/22/15
Methodology
Enzymatic rate method (Beckman Coulter UniCel DxC 660i)
Sample Type
| Preferred Sample Type | |
|---|---|
| Light green top - Plasma | |
| Acceptable Sample Type(s) | |
|---|---|
| Dark green top - Plasma | |
| Yellow top - Serum | |
| Red top - Serum | |
Centrifuge: Yes
Specimen Minimum Volume
0.3 mL
Specimen Stability
| Temperature | Time |
|---|---|
| Ambient (18-25°C) | 8 hours |
| Refrigerated (2-8°C) (store) | 48 hours |
| Frozen (-15 to -20°C) | 1 month |
Separate plasma or serum from cells within 2 hours.
Reference Ranges
| Normal Range |
|---|
| 5 - 75 U/L |
| Technical Range |
|---|
| 5 - 3,000 U/L |
Rejection Criteria
| Hemolysis | N/A |
|---|---|
| Icteric | N/A |
| Lipemia | N/A |
Availability
| Performed | STAT |
|---|---|
| 24/7 | Yes |
Performing Laboratory
MultiCare Yakima Memorial Hospital Laboratory
Lab Department
Chemistry
CPT Code
82977
LOINC
2324-2 Gamma glutamyl transferase [Catalytic activity/Vol]