| Ordering Code | 327 |
|---|---|
| Test Name | Uric Acid, 24 Hr Urine |
| Alias | 24 Hr Urine Uric Acid |
| Preferred Specimen | Urine, 24 Hour |
| Preferred Container | 24 Hour Urine Container |
| Optimum Volume | 1 mL |
| Collection Instructions | Keep refrigerated during collection 24 Hour collections: Do not include first morning specimen; collect all subsequent voidings. The last sample collected should be the first morning specimen voided the following morning at the same time as the previous morning first voiding Record entire 24 Hr Volume on container and requisition No preservatives added. |
| Handling Instructions | Send a well-mixed, 50 mL aliquot of specimen Processing: Add a sufficient volume of sodium hydroxide solution to bring the pH between 8 and 9. |
| Transport Requirements | Oahu: Ambient Airline: Ambient |
| Specimen Stability | Ambient: 3 Days Refrigerated: 4 Days |
| Rejection Criteria | Specimen older than stability limits |
| Avail. Stat | NO |
| Analytic Time | 1 Day |
| Methodology | Uricase / Colorimetric |
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 |
|---|---|---|---|---|---|---|---|---|---|
| 24-Hr Urine Uric Acid | ALL | 250-800 | 250-750 | mg/24hr | |||||
| Total Volume | ALL | mL | See report. | ||||||
| Total Time | ALL | minutes | See report. | ||||||
| Uric Acid, Urine | ALL | mg/dL | See report. |