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HelpTest Code TBIL Bilirubin, total
Laboratory Code
LAB50
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 | 1 day |
| Refrigerate | 7 days |
| Frozen | 6 months |
Methodology
Colorimetry
Days and Times Performed
24 hrs, TAT 1 day
Specimen Condition
| Haemolysis | OK |
|---|---|
| Icterus | Not applicable |
| Gross Lipaemia | Alert/Reject |
| Others | Not applicable |
Reference Interval
| Age | |
|---|---|
| 0 – 14 days | 3 – 284 umol/L |
| 15 days – < 1 yr | 1 – 12 umol/L |
| 1 – 8 yrs | 1 – 7 umol/L |
| 9 – 11 yrs | 1 – 9 umol/L |
| 12 – 14 yrs | 2 – 12 umol/L |
| 15 – 18 yrs | 2 – 14 umol/L |
| ≥ 19 yrs | 1 – 20 umol/L |
Testing Laboratory
National University Hospital
Clinical Chemistry, 67724346
Useful For
Assessment of liver function.
Measurement of conjugated, unconjugated and delta fractions of bilirubin.
Service Code
31013
LOINC Code Information
14631-6
Update
Last updated 10/03/2025