Urea Nitrogen


Abbrev Code:BUN   
Order Code:LAB140Order Name:Urea Nitrogen
Synonyms:BUN
Methodology:Bichromatic rate
St Johns/St Joseph/Woodwinds: Urease
CPT Codes: 84520 x1
Turnaround Time:Performed and reported 24 hours/day.


Collection Instructions

Specimen:Blood
Optimal Volume:2.5 mL
Minimum\Peds Volume:0.6 mL
Container:Green (lithium heparin, gel), St Johns/St Joseph/Woodwinds-Green (lithium heparin, no gel)
Alternate Containers: Green (lithium heparin, no gel), Red (no gel), Red or gold (gel), St Johns/St Joseph/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:Stability: Room temperature - 3 to 5 days; refrigerated - 7 days; frozen - indefinitely
Test Performed at or Referral Lab Chemistry  (M Health Maple Grove Clinic, Range, UMMC-West Bank, UMMC-East Bank, Oxboro Bloom, Lakes, Ridges, Northland, Southdale, M Health Clinic and Surgery Center, Grand Itasca, St. Joseph's, St. John's, 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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