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HelpTest Code ALT Alanine Transaminase
Laboratory Code
LAB132
Specimen Requirements
Submit only one of the following:
Preferred
Specimen Type: Serum
Container/Tube: Gold Top (SSTII)
Volume: 5.0 mL
Minimum Volume: 0.5 mL serum
Collection Instructions: Allow specimen to clot for 30 mins and centrifuge within 2 hrs.
Acceptable
Specimen Type: Plasma
Container/Tube: Green Top (Li Heparin/PST)
Volume: 4.5 mL
Minimum Volume: 0.5 mL plasma
Collection Instructions: Centrifuge within 2 hrs.
Specimen Stability
| Specimen Type | Serum/Plasma |
|---|---|
| Ambient | 3 days |
| Refrigerate | 7 days |
| Frozen (-40˚C) | 60 days |
Methodology
Enzymatic Assay
Days and Times Performed
24 hrs, TAT 1 day
Specimen Condition
| Haemolysis | OK |
|---|---|
| Icterus | OK |
| Gross Lipaemia | Alert/Reject |
| Others | Not applicable |
Reference Interval
| Age | Male (U/L) | Female (U/L) |
|---|---|---|
| 0 – < 1 yr | 6 – 51 | 6 – 51 |
| 1 – 12 yrs | 11 – 30 | 11 – 30 |
| 13 – 18 yrs | 10 – 33 | 8 – 24 |
| ≥ 19 yrs | 6 – 40 | 6 – 35 |
Testing Laboratory
National University Hospital
Clinical Chemistry, 67724346
Useful For
Liver profile assessment.
Service Code
31015
LOINC Code Information
1742-6
Alias
ALT
GPT
SGPT
Update
Last updated 10/03/2025