Urea Nitrogen, Timed Urine

Abbrev Code:UBUNT   
Order Code:LAB3816Order Name:Urea Nitrogen Timed Urine
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)


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

Click HERE to Report test errors or omissions.
*If no email program is associated with this computer, please contact:
systemlabguide@fairview.org for TestID: 907"