| Ordering Code | 812 |
|---|---|
| Test Name | Phosphorus, Urine |
| Alias | 24 Hr Urine Phosphorus Random Urine Phosphorus |
| 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 | Record entire 24 Hr Vol on container & requisition Keep refrigerated during collection. |
| Handling Instructions | After collection, acidify with 6N HCl to obtain a pH <3 Send a well-mixed, 50 mL acidified aliquot of specimen. |
| Transport Requirements | Oahu: Refrigerated Airline: Refrigerated |
| Specimen Stability | Refrigerated: 2 Days without additives, 6 Months when acidified to pH <3 with 6N HCl. |
| Rejection Criteria | Received ambient, Specimen older than stability limits |
| Avail. Stat | NO |
| Analytic Time | 1 Day |
| Methodology | Phosphomolybdate-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 Phosphorus | ALL | 400-1300 | 400-1300 | mg/24hr | |||||
| Urine Volume | ALL | mL | See report. | ||||||
| Total Time | ALL | minutes | See report. | ||||||
| Urine Phosphorus | ALL | mg/dL | See report. |