Urea Nitrogen, 24-Hour Urine without Creatinine
Also known as BUN, Nitrogen Balance, Nitrogen, Urea, 24-Hour Urine
What it measures
- Urea Nitrogen, 24 HR UrLOINC 3096-5
Specimen
- Specimen
- 10 mL urine aliquot from a well-mixed 24-hour collection - no preservative
- Minimum volume
- 2 mL
- Also accepted
- Urine preserved with 6N HCl to maintain a pH of <4. Preserved urine may be shipped at room temperature • Urinalysis transport tube (yellow-top, blue fill line, preservative tube)
- Container
- Plastic urine container
- Temperature
- Refrigerated (cold packs)
Record total volume on both the transport container and the test requisition
Turnaround
Set up: Mon-Fri; Report available: 5 days
Billing
CPT 84540