Urea Nitrogen


Abbrev Code:BUN   
Order Code:LAB140Order Name:Urea Nitrogen
Methodology:Roche: Kinetic with urease and glutamate dehydrogenase
Vista: Bichromatic rate
St Johns/Woodwinds: Urease
CPT Codes: 84520 x1, 84520 x1
Turnaround Time:Performed and reported 24 hours/day.
Associated Links:

Roche Go Live Schedule



Collection Instructions

Specimen:Blood
Optimal Volume:2.5 mL
Minimum\Peds Volume:0.6 mL
Container:Green (lithium heparin, gel), St Johns/Woodwinds-Green (lithium heparin, no gel)
Alternate Containers: Green (lithium heparin, no gel), Red (no gel), Red or gold (gel), St Johns/Woodwinds - Red (no gel)


Processing and Shipping

Specimen Processing:Aliquot 1.25 mL, 0.2 mL minimum. Store in refrigerator.
Shipping Instructions:Ship at refrigerated temperature.
Stability:7 days at room temperature; 7 days refrigerated; 1 year frozen.
Test Performed at or Referral Lab Chemistry  (CSC Maple Grove, CSC Mpls, Grand Itasca, Lakes, Northland, Oxboro Clinic, Range, Roche-Ridges, Roche-UMMC East, Southdale, St. John's, UMMC West Bank, Woodwinds)


Interpretive

Critical Range:Basic, Electrolyte and Renal Panels Critical Values and Reference Ranges
Reference Range:Basic, Electrolyte and Renal Panels Critical Values and Reference Ranges
Use:Indirectly evaluate renal function and hydration.


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