Home
HelpTest Code GGT Gamma Glutamyl Transferase
Additional Codes
| Epic Ordering Code | LAB85 |
| NBS code | LBC00430 |
| Service code | 31019 |
Specimen Requirements
Submit only one of the following:
| Container: | Acceptable: |
| Yellow Top | Light Green Top |
Processing Requirements
Allow specimen to clot for 30 mins (Yellow Top) and centrifuge within 2 hours
Specimen type: Serum
Volume: 0.5mL
Specimen Stability
| Specimen Type | Serum/Plasma |
|---|---|
| Ambient | 7 days |
| Refrigerate | 7 days |
| Frozen | 3 months |
Specimen Condition
| Haemolysis | Alert/Reject |
|---|---|
| Icterus | OK |
| Lipaemia | OK |
| Others | Not applicable |
Methodology
Enzymatic Assay
Days and Times Performed
24 hrs, TAT 1 day
Reference Interval
| Age | Male (U/L) | Female (U/L) |
|---|---|---|
| 0 – < 15 days | 23 – 219 | |
| 15 days – < 1 yr | 8 – 127 | |
| 1 yr – < 11 yrs | 6 – 16 | |
| 11 yrs – < 19 yrs | 7 – 21 | |
| ≥ 19 yrs | < 55 | < 38 |
Testing Laboratory
National University Hospital
Clinical Chemistry, 67724346
Useful For
Assessment of liver profile.
Update
Last updated 17/07/2026
LOINC Code Information
2324-2
Alias
Gamma Glutamyltransferase (GGT)
Gamma-Glutamyltranspeptidase (GGTP)