Urea Nitrogen, Timed Urine


Abbrev Code:UBUNT   
Order Code:LAB3816Order Name:Urea Nitrogen Timed Urine
Methodology:Roche: 
Vista: Bichromatic rate
CPT Codes: 84540 x1, 81050 x1, 84540 x1, 81050 x1
Test Includes:Urea nitrogen urine mg/dL; urea nitrogen urine g/spec, duration in hours, volume in mL
Turnaround Time:Performed and reported 24 hours/day.
Associated Links:

Urine Collection Procedure, Roche Go Live Schedule



Collection Instructions

Specimen:Urine, timed collection (20 to 28 hours)
Optimal Volume:Submit entire collection; analysis requires 1 mL
Container:3 L plastic jug
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.
Centrifuge specimens containing red cells or precipitate. Urine containing bladder fluid is acceptable. Enter coded comment IRRFL (urine contains bladder irrigation fluid). 
Shipping Instructions:Ship at refrigerated temperature.
Stability:4 days refrigerated.
Test Performed at or Referral Lab Chemistry  (Range, Roche-UMMC East, Southdale, UMMC West Bank)


Interpretive

Reference Range:Urine Chemistry Reference Ranges
Use:Evaluate metabolism of urate, including gout and renal stones.


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