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HelpTest Code GGT Gamma Glutamyl Transferase
Useful For
GGT activity is elevated in any and all forms of liver disease. It is highest in biliary obstruction, rising earlier and remaining elevated longer than other enzymes. Moderate elevations are seen in infectious hepatitis. In acute and chronic pancreatitis, GGT activity may be 5 -15 times normal. GGT is considered a marker for alcohol abuse.
Synonyms/Keywords
GGT, GGTP, Gamma GT, Gamma Glutmyl Trans
Specimen Requirements
| Fasting Required | Specimen Type | Preferred Container/Tube | Acceptable Container/Tube | Specimen Volume | Specimen Minimum Volume (allows for 1 repeat) |
Pediatric Minimum Volume (no repeat) |
|---|---|---|---|---|---|---|
| No | Plasma/Serum | Lithium-heparin Plasma Separator (PST), Serum Separator Tube (SST) | Lithium or Sodium-heparin Green Top (GTT), Red Top Tube (RTT) | 1 mL | 0.3 mL | 0.6 mL whole blood |
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Plasma/Serum | Ambient | 5 days |
| Refrigerate | 7 days | |
| Frozen | 1 year |
Rejection Criteria
Grossly hemolyzed samples
Reference Range Information
Male:
0-11 yrs: ≤20 U/L
12-<19 yrs: ≤25 U/L
≥ 19 yrs: ≤64 U/L
Female:
0 - <19 yrs: ≤20 U/L
≥ 19 yrs.: ≤43 U/L
Marshfield Labs Performing Department
Marshfield Labs Chemistry
Performing Information
| Performing Location | Day(s) Test Performed | Analytical Time | Methodology/Instrumentation |
|---|---|---|---|
| Beaver Dam | Monday through Sunday | Less than 2 hours | Glutamyl-carboxy-p-nitroanilide Rate Assay/Beckman AU |
| Eau Claire | Monday through Sunday | Less than 2 hours | Glutamyl-carboxy-p-nitroanilide Rate Assay/Beckman AU |
| Park Falls | Monday through Sunday | Less than 2 hours | Glutamyl-carboxy-p-nitroanilide Rate Assay/Beckman AU |
| Ladysmith | Monday through Sunday | Less than 2 hours | Glutamyl-carboxy-p-nitroanilide Rate Assay/Beckman AU |
| Rice Lake | Monday through Sunday | Less than 2 hours | Glutamyl-carboxy-p-nitroanilide Rate Assay/Beckman AU |
| Marshfield | Monday through Sunday | Less than 2 hours | Glutamyl-carboxy-p-nitroanilide Rate Assay/Beckman AU |
| Minocqua | Monday through Sunday | Less than 2 hours | Glutamyl-carboxy-p-nitroanilide Rate Assay/Beckman AU |
| Neillsville | Monday through Sunday | Less than 2 hours | Glutamyl-carboxy-p-nitroanilide Rate Assay/Beckman AU |
| Stevens Point | Monday through Sunday | Less than 2 hours | Glutamyl-carboxy-p-nitroanilide Rate Assay/Beckman AU |
| Weston | Monday through Sunday | Less than 2 hours | Glutamyl-carboxy-p-nitroanilide Rate Assay/Beckman AU |
CPT Codes
| CPT | Modifier (if needed) |
Quantity | Description | Comments |
|---|---|---|---|---|
| 82977 | 1 |
Outreach CPT Codes
| CPT | Modifier (if needed) |
Quantity | Description | Comments |
|---|---|---|---|---|
| 82977 | 1 |
Ordering Applications
| Ordering Application | Description |
|---|---|
| Cerner | Gamma Glutamyl Transferase |