Urea, Random, Urine
Use
Assessment of kidney failure (prerenal vs acute kidney injury), especially useful when fractional excretion of urea is calculated to distinguish prerenal azotemia from acute kidney injury.
Special Instructions
If not ordering electronically, complete, print, and send a Renal Diagnostics Test Request (T830) with the specimen.
Limitations
Random urine collections normalized to urinary creatinine may be of some clinical use in patients who cannot collect a 24‑hour specimen, typically small children. No established reference values. All specimens will be evaluated for test suitability.
FDA ApprovedNew York Approved
Methodology
Automated Analyzer (Clinical Chemistry)
Biomarkers
LOINC Codes
- 3092-4
- 3092-4
Result Turnaround Time
1 day
Related Documents
For more information, please review the documents below
Specimen
Urine
Volume
4 mL
Minimum Volume
1 mL
Container
Plastic tube
Collection Instructions
Collect a random urine specimen. No preservative.
Causes for Rejection
All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 7 days |
| Refrigerated | 14 days |
| Frozen | 30 days |