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Test Compendium

2078: Urea Nitrogen, Urine 24 Hr

Test Code

  • 2078

Test Synonym

  • 24 hour urine Urea Nitrogen

Volume

  • 10 mL

Minimum Volume

  • 1 mL

Specimen Requirements

  • Urine

Container

  • 24 Hour Urine Container, Container- Urine

Storage

  • Refrigerated

Turn Around Time

  • 1 day

Special Instructions

  • 10 mL aliquot of entire well- mixed collection in Plastic urine container, no preservative

Additional Information

  • Refrigerate the specimen as it is collected. Instruct the patient to void at 8 AM and discard the specimen. Then collect all urine including the final specimen voided at the end of the 24-hour collection period (ie, 8 AM the next morning). Screw the lid on securely. Container must be labeled with patient's full name, date and time collection started, and date and time collection finished. Record total 24-hour urine volume on the request form.

Specimen Stability

  • AMB IENT : 2 days REFRIGERATED : 7 days FROZEN: 1 month

Reference Range

  • Fasting Sex Message Lines Ref Ranges Unit of Measure
    12 - 20 g/24 Hr