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Test Code URUNT Urea Nitrogen, 24 Hour, Urine

Performing Laboratory

Bronson Laboratory Services-Chemistry

Reference Values

10-20 g/24 hours

Methodology

Spectrophotometric

Specimen Requirements

Specimen Type: Urine, 24 hour. Entire collection.

Container/Tube: Clean, plastic urine container

Specimen Volume: 2.0 mL aliquot from well mixed 24-hour urine.

Collection Instructions:

1. No preservative. Refrigerate specimen during collection.

Additional Information:

1. 24-Hour volume is required.

2. Starting and ending dates/times of collection are required.

3. Follow instructions in Patient Instructions for 24-Hour Collection under Special Instructions.

Processing Instructions:

1. Measure and record total volume.

2. Mix entire collection well and pour off 2.0 mL aliquot into a false bottom container.

Specimen Transport Temperature

Refrigerate

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding

84540