UW Hospital and Clinics Lab Test Directory
| Test Name: |
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Urea Nitrogen, Urine
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| Test Code(s): |
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UREA / HCUREA
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| CPT Code(s): |
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84540
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| Methodology: |
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Urease
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| Days Performed: |
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Daily, 24 hours.
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| Turnaround Time: |
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Stat: 1 hour.
Routine: 4 hours.
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Specimen Requirements
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| Specimen: |
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Random urine
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| Collection Container: |
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Preferred: Sterile screw cap container
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| Collection Volume: |
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Preferred: Entire collection
Pediatrics: Entire collection
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| Sample Analyzed: |
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Urine aliquot
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| Volume Required: |
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Preferred: 1 mL
Pediatrics: 0.4 mL
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| Specimen Transport: |
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Transport entire specimen to UWHC Core Laboratory (B4/220). Transport with coolant pack if coming from outreach location.
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| Stability: |
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Ambient: 5 days
Refrigerated: 5 days
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Interpretation
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Results reported as mg/dL urea nitrogen.
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| Additional Information: |
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Urine urea nitrogen is typically used as an indicator of renal function. For nutritional assessment of nitrogen balance see Total Nitrogen, Urine.
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Urea Nitrogen, Urine
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