| Ordering Code | 824 |
|---|---|
| Test Name | Urea Nitrogen, Urine |
| Alias | 24 Hour Urine Urea Nitrogen Random Urine Urea Nitrogen UUN |
| Preferred Specimen | Urine, 24 Hour |
| Preferred Container | 24 Hour Urine Container |
| Other Specimen/Container | Random Urine in Clean Container |
| Optimum Volume | 0.5 mL |
| Collection Instructions | Keep refrigerated during collection Record entire 24 Hr Vol on container & requisition No preservatives added. |
| Handling Instructions | Send a well-mixed, 50 mL aliquot of specimen. |
| Transport Requirements | Oahu: Refrigerated Airline: Refrigerated |
| Specimen Stability | Refrigerated: 7 Days Frozen: 4 Weeks Frozen samples should be thawed only once. |
| Rejection Criteria | Preservatives used, Specimen older than stability limits, Received ambient |
| Avail. Stat | NO |
| Analytic Time | 1 Day |
| Methodology | Kinetic-UV |
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 |
|---|---|---|---|---|---|---|---|---|---|
| 24-Hr Urine Urea Nitrogen | ALL | 12-20 | 12-20 | gm/24hr | |||||
| Volume | ALL | mL | See report. | ||||||
| Total Time | ALL | minutes | See report. | ||||||
| Urine Urea Nitrogen | ALL | mg/dL | See report. |