Urea Nitrogen, 24 Hour, Urine*
Methodology
Colorimetric Absorbance
Performing Laboratory
Rutland Regional Medical Center Laboratory
Specimen Requirements
Specimen Type: Urine, 24-hour collection
Container/Tube: Plastic container
Specimen Volume: Entire 24-hour collection
Collection Instructions:
1. No preservative.
2. Refrigerate specimen during collection.
Additional Information:
1. Starting and ending times of collection are required.
2. Follow instructions in Urine Collection in Special Instructions.
Specimen Transport Temperature
Refrigerated
Reference Values
7-20 g/24 hours
Day(s) Performed
Daily
Analytical Time:
1 day
Test Classification and CPT Coding
81050-Urine timed measurement
84540-Urea nitrogen