Blood Urea Nitrogen

Last Modified: 10/22/2021 7:54:09 AM

Medical Necessity Documentation:  
Client Notes:  
Patient Preparation:  
Specimen Requirements: 1.0 mL Plasma from a PST Mint Green Top Tube - Lithium Heparin (preferred)
1.0 mL Serum in a SST Gold Top Tube
Collection Instructions:  
Minimum Volume: 0.2 mL Plasma or Serum
Neonatal Volume: 0.3 mL Whole Blood Green Microtainer
Transport & Storage: Temperature/Stability: 7 days Refrigerated

72 hours unspun
Reference Range:
1 day to 5 days: 5 - 17 mg/dL
5 days to 14 years: 7 - 17 mg/dL
14 years to 20 years: 7 - 21 mg/dL

Male > 20 years: 9 -21 mg/dL
Female > 20 years: 7 - 18 mg/dl 
Critical Ranges: Infants in a PH Neonatal Intensive Care Units (NICU): 
>50 mg/dL

Pediatric to Adult
>100 mg/dL
Test Comments:  
Methodology: Colorimetric
Clinical Significance:  
Custom Panel: No


Stat Eligible: Yes
Days Performed: Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday
Sites Performed: Parkview Cancer Institute, Parkview Dekalb, Parkview Heart Institute, Parkview Hospital Randallia, Parkview Huntington, Parkview LaGrange, Parkview Noble, Parkview Regional Medical Center, Parkview Wabash, Parkview Warsaw , Parkview Whitley
PHL Test Code: BUN
EPIC Test Code: LAB140
Alternate Test Names: BUN
Included Tests:  
CPT Coding: 84520

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