| Ordering Code | 128 |
|---|---|
| Test Name | BUN |
| Alias | Urea Nitrogen Blood Urea Nitrogen Urea |
| Preferred Specimen | Serum |
| Preferred Container | SST (Gold) |
| Other Specimen/Container | Plasma in Lithium Heparin (Green), Serum in Plain (Red) |
| Optimum Volume | 0.5 mL |
| Transport Requirements | Oahu: Ambient Airline: Refrigerated |
| Specimen Stability | Ambient: 7 Days Refrigerated: 7 Days Frozen: 1 Year |
| Rejection Criteria | Specimen older than stability limits, Insufficient quantity |
| Avail. Stat | YES |
| Analytic Time | 1 Day |
| Methodology | Kinetic UV assay |
Reference range(s)
The reference ranges listed below are valid on this date of June 29, 2025.
| Component | Age | Male Norm | Male Critical Low | Male Critical High | Female Norm | Female Critical High | Female Critical Low | Units | Add'l info |
|---|---|---|---|---|---|---|---|---|---|
| BUN | ALL | 6-23 | 6-23 | mg/dL |