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HelpTest Code DB Bilirubin, direct
Additional Codes
| Epic Ordering Code | LAB52 |
| NBS code | LBC00338 |
| Service code | 31014 |
Specimen Requirements
Submit only one of the following:
| Preferred: | 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 | 2 days |
| Refrigerate | 7 days |
| Frozen | 3 months |
Specimen Condition
| Haemolysis | Alert/Reject |
|---|---|
| Icterus | Not applicable |
| Lipaemia | Alert/Reject |
| Others | Not applicable |
Methodology
Colorimetry
Days and Times Performed
24 hrs, TAT 1 day
Reference Interval
| Age | |
|---|---|
| 0 – 14 days | 6 – 12 umol/L |
| 15 days – < 1 yr | ≤ 5 umol/L |
| 1 – 8 yrs | ≤ 3 umol/L |
| 9 – 12 yrs | ≤ 5 umol/L |
| 13 – 18 yrs | 2 – 7 umol/L |
| ≥ 19 yrs | ≤ 9 umol/L |
Testing Laboratory
National University Hospital
Clinical Chemistry, 67724346
Useful For
Differential diagnosis of jaundice
Update
Last updated 16/07/2026
LOINC Code Information
14629-0
Alias
BC