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Labcorp Oklahoma, Inc.
Test Directory


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Urea Nitrogen Urine Random

Order Name UUN R U
Test Number: 3000270
Revision Date 06/04/2021
Test Name Methodology LOINC Code
Urea Nitrogen Urine Random
Urease/GLDH 3095-7 
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 1 mL (0.5) Urine, Random Sterile Urine container Refrigerated
Instructions Random urine collection. No preservative. Keep refrigerated.
Specimen stability: Ambient 2 days, Refrigerated 7 days, Frozen 1 month
GENERAL INFORMATION
Testing Schedule Daily 
Expected TAT 1-2 days  
Clinical Use Useful as an aid in evaluating renal function. 
CPT Code(s) 84540
Lab Section Chemistry