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Test Name:
Urea Nitrogen, Urine, Random
- SBMF No:
23222 - Performance Lab Name:
Automated Lab - Test Mnemonic:
U UNR - ABN:
Not required - CPT Code:
84540 - LOINC Code:
3095-7 - Spec Type:
Urine - Spec Container:
Plastic container with tightly fitting lid - Pref Vol:
1.0 mL aliquot from well mixed collection - Min Vol:
0.2 mL aliquot from well-mixed collection - Fasting:
No - Spec Collect:
Routine random urine collection - Spec Store Transport:
Refrigerated - Spec Stability:
48 hours refrigerated (2-8°C) - Spec Remarks:
Note: 24-hour urine is optimal specimen for testing - Methodology:
Enzymatic - Use:
Used in the diagnosis of certain renal and metabolic diseases - Clinical Significance:
Urea is synthesized in the liver from ammonia produced as a result of deamination of amino acids. This biosynthetic pathway is the chief means of excretion of surplus nitrogen by the body. - Reference Range:
Reference range not available for random urine - Additional Test Info:
Used as a coarse nitrogen-wasting screen on patients on hyperalimentation and as an Indicator of nitrogen balance in hyperalimentation. - Day Run:
Sun-Sat (daily) - Time Run:
As received - Time Reported:
4 hours - Test Type:
URINE
