Urea Nitrogen, Timed Urine


Sunquest Code:UBUNT  
Epic Code:LAB3816Epic Name:Urea Nitrogen Timed Urine
Order Instructions:Order UCRT in addition to UBUNT. Enter collection volume and duration.
Synonyms:UBUNT
Methodology:Bichromatic rate
CPT Code:84540, 81050
Test Includes:Urine urea nitrogen and creatinine.
Turnaround Time:Performed and reported 24 hours/day.
Associated Links:

Urine Collection Procedure



Collection Instructions

Specimen:Urine, timed collection (20 to 28 hours)
Optimal Volume:Submit entire collection; analysis requires 1 mL
Collection Instructions:IVP dye does not interfere with sample analysis.


Processing and Shipping

Specimen Processing:Mix collection well before aliquot is taken. Centrifuge specimens containing red cells or precipitate. Aliquot 5 mL, 1 mL minimum. Store in refrigerator.
Shipping Instructions:Ship at refrigerated temperature.
Test Performed at or Referral Lab Chemistry  (Fairview Range - FRMC, UMMC-West Bank, UMMC-East Bank, Fairview Ridges - FRH, Fairview Northland - FNMC, Fairview Southdale - FSH)


Interpretive

Reference Range:24 hour collection: Urea Nitrogen: 12-20 g/24 hours.
Use:Evaluate metabolism of urate, including gout and renal stones.


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