| Ordering Code | 158 |
|---|---|
| Test Name | Creatinine, 24 Hr Urine |
| Alias | 24 Hr Urine Creatinine |
| Preferred Specimen | Urine, 24 Hour |
| Preferred Container | 24 Hour Urine Container |
| Optimum Volume | 1 mL |
| Collection Instructions | Record entire 24 Hr Volume on container and requisition. |
| Handling Instructions | Send a well-mixed, 50 mL aliquot of specimen. |
| Transport Requirements | Oahu: Ambient Airline: Ambient |
| Specimen Stability | Ambient: 2 Days Refrigerated: 6 Days Frozen: 6 Months (Aliquot) Frozen samples should be thawed only once. |
| Rejection Criteria | Specimen older than stability limits |
| Avail. Stat | NO |
| Analytic Time | 1 Day |
| Methodology | Modified Jaffe, Alkaline picrate-Kinetic |
Reference range(s)
The reference ranges listed below are valid on this date of October 24, 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 Creatinine | ALL | 1.0-2.0 | 0.7-1.6 | gm/24hr | |||||
| Total Volume | ALL | mL | See report. | ||||||
| Total Time | ALL | minutes | See report. | ||||||
| Creatinine, Urine | ALL | mg/dL | See report. |
