Urea Nitrogen


Sunquest Code:BUN  
Epic Code:LAB140Epic Name:Urea Nitrogen
Synonyms:BUN
Methodology:Bichromatic rate
CPT Code:84520
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) (Green (lithium heparin) on ICE, Red (no gel), Red or gold (gel))


Processing and Shipping

Specimen Processing:Aliquot 1.25 mL, 0.2 mL minimum. Store in refrigerator.
Shipping Instructions:Ship at refrigerated temperature.
Test Performed at or Referral Lab Chemistry  (University of Minnesota Health Maple Grove Clinics, Fairview Range - FRMC, UMMC-West Bank, UMMC-East Bank, Oxboro Bloom, Fairview Lakes - FLMC, Fairview Ridges - FRH, Fairview Northland - FNMC, Fairview Southdale - FSH, M Health Clinic and Surgery Center, Grand Itasca GICH)


Interpretive

Reference Range:
Age  
0 - 14 d 3-23 mg/dL
15 d - 11 mo 3-17 mg/dL
1 - 9 y 9-22 mg/dL
10 - 18 y and older (female) 7-19 mg/dL
10 - 18 y and older (male) 7-21 mg/dL
19 y and older 7-30 mg/dL
GICH: All ages 7/25 mg/dL  
Use:Indirectly evaluate renal function and hydration.


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