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HelpBCH Order Code UNU Urea Nitrogen, 24-Hour Urine
Performing Laboratory
Boulder Community Health
Specimen Requirements
Container/Tube: 24-hour plastic urine container
Specimen Volume: Entire 24-hour urine collection
Collection Instructions: No preservative.
Refrigerate specimen during collection.
Note: 1. Starting and ending times of
collection are required on request form for
processing.
2. Follow instructions in “Urine Collections” in “Special Instructions.”
Specimen Transport Temperature
Refrigerate
Reference Values
12-20 g/dL
Day(s) Test Set Up
Monday through Sunday
Test Classification and CPT Coding
81050-urine timed measurement
84540-urea nitrogen