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HelpTest Code GGT Gamma Glutamyl Transferase
Specimen Requirements
Submit only one of the followings
Preferred
Specimen Type: Serum
Container/Tube: Gold Top (SSTII)
Volume: 5.0mL
Minimum Volume: 0.5 mL Serum
Collection Instructions: Allow specimen to clot for 30 minutes and centrifuge within 2 hours
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Acceptable
Specimen Type: Plasma
Container/Tube: Green Top (Li Heparin/PST)
Volume: 4.5mL
Minimum Volume: 0.5 mL Plasma
Collection Instructions: Centrifuge within 2 hours
Sample Stability
** Preferred temperatures for storage prior to and during shipping to NUH **
| Specimen Type: | Serum/Plasma |
|---|---|
| Ambient: | 7 days |
| Refrigerate: | 7 days |
| Frozen: | 3 months |
Reference Interval
| Age | Male (U/L) | Female (U/L) |
|---|---|---|
| 0 to <15 days | 23 – 219 | |
| 15 days to <1 year | 8 – 127 | |
| 1 year to <11 years | 6 – 16 | |
| 11 years to <19 years | 7 – 21 | |
| ≥ 19 years | < 55 | < 38 |
Days and Times Performed
24 hours, TAT 1 day
Methodology
L-Gamma-glutamyl-3-carboxy-4-nitroanilide Substrate
Service Code
31019
Update
Last updated 15/10/2024
Updated on Reference interval & Sample stability
Unacceptable Condition
| Haemolysis | NA |
|---|---|
| Icterus | NA |
| Lipaemic | NA |
| Others | NA |
Testing Laboratory
National University Hospital
Clinical Chemistry, 67724346
Useful For
Assessment of Liver Profile.