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HelpTest Code TBIL Bilirubin, total
Additional Codes
| Epic Ordering Code | LAB50 |
| NBS code | LBC00934 |
| Service code | 31013 |
Specimen Requirements
Submit only one of the following:
| Preferred: | Acceptable: |
| Gold Top | Light Green Top |
Processing Requirements
Allow specimen to clot for 30 mins (Gold Top) and centrifuge within 2 hours
Specimen type: Serum
Volume: 0.5mL
Storage/transport requirements: Refrigerated
Specimen Stability
| Specimen Type | Serum/Plasma |
|---|---|
| Ambient | 1 day |
| Refrigerate | 7 days |
| Frozen | 6 months |
Specimen Condition
| Haemolysis | OK |
|---|---|
| Icterus | Not applicable |
| Gross Lipaemia | Alert/Reject |
| Others | Not applicable |
Methodology
Colorimetry
Days and Times Performed
24 hrs, TAT 1 day
Reference Interval
| Age | Range |
|---|---|
| 0 – < 15 days | 3 – 284 umol/L |
| 15 days – < 1 year | 1 – 12 umol/L |
| 1 year – < 9 years | 1– 7 umol/L |
| 9 years – < 12 years | 1 – 9 umol/L |
| 12 years – < 15 years | 2 – 12 umol/L |
| 15 years – < 19 yrs | 2 – 14 umol/L |
| 19 years - unspecified | 1 – 26 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.
Update
Last updated 27/06/2026
LOINC Code Information
14631-6