| Ordering Code | 121 |
|---|---|
| Test Name | Bilirubin, Direct |
| Alias | D Bili Bili Direct |
| Preferred Specimen | Serum |
| Preferred Container | SST (Gold) |
| Other Specimen/Container | Serum in Plain (Red), Plasma in Lithium Heparin (Green-PST), Plasma in Lithium Heparin (Dark Green-PP No Gel), Serum in SST Amber Microtainer (Gold), Plasma in Lithium Heparin Microtainer (Mint Green) |
| Optimum Volume | 1 mL Microtainer: Full draw required |
| Collection Instructions | After collection, avoid prolonged exposure to light. |
| Handling Instructions | All specimen types must be centrifuged within 2 hours of collection. If no gel separation present in tube and testing is delayed, plasma/serum is aliquoted from cells within 2 hours of collection. |
| Transport Requirements | Oahu: Refrigerated Airline: Refrigerated |
| Specimen Stability | Refrigerated: 3 Days Frozen: 3 Months (Aliquot) Frozen samples should be thawed only once. |
| Rejection Criteria | Prolonged exposure to light, Specimen older than stability limits, Hemolysis, Insufficient quantity |
| Avail. Stat | YES |
| Analytic Time | 1 Day |
| Methodology | Diazonium Salt, DPD |
Reference range(s)
The reference ranges listed below are valid on this date of August 15, 2025.
| Component | Age | Male Norm | Male Critical Low | Male Critical High | Female Norm | Female Critical High | Female Critical Low | Units | Add'l info |
|---|---|---|---|---|---|---|---|---|---|
| Bilirubin, Direct | ALL | <=0.3 | <=0.3 | mg/dL | |||||
| Bilirubin, Indirect | >=2Y | 0-1.0 | 0-1.0 | mg/dL | |||||
| Bilirubin, Indirect | 2W-1Y | 0-1.0 | 0-1.0 | mg/dL | |||||
| Bilirubin, Indirect | 1W-2W | 0-12.0 | 0-12.0 | mg/dL | |||||
| Bilirubin, Indirect | 2D-1W | 0-15.0 | 0-15.0 | mg/dL | |||||
| Bilirubin, Indirect | 0-2D | 0-12.0 | 0-12.0 | mg/dL |