Blood Urea Nitrogen

Overview

  • EPIC Code:
  • LAB140
  • Soft Test Code:
  • BUN
Alternate Names
  • BUN

Specimen Collection & Preparation

Specimen Requirements:

-OR-

1.0 mL Plasma from a PST Mint Green Top Tube - Lithium Heparin
Minimum Volume:
0.25 mL Plasma*
Neonatal Volume:
0.3 mL Whole Blood Green Microtainer*

* This volume does not allow for repeat testing

Processing Instructions:

Centrifuge and separate from cells within 72 hours


Transport and Storage:
  • Ambient (18-24°C): 7 Days
  • Refrigerated (2-8°C): 7 Days

Clinical Interpretation

Reference Range:

Pediatric
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 Unit (NICU): 
> 50 mg/dL

Pediatric to Adult:
> 100 mg/dL


Methodology:
  • Photometric

Production Schedule

Sites Performed
  • Parkview Cancer Institute
  • Parkview DeKalb Hospital
  • Parkview Huntington Hospital
  • Parkview Kosciusko Hospital
  • Parkview LaGrange Hospital
  • Parkview Noble Hospital
  • Parkview Randallia Hospital
  • Parkview Regional Medical Center
  • Parkview Southwest
  • Parkview Wabash Hospital
  • Parkview Whitley Hospital
Days Performed
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Departments
  • Chemistry
Turn Around Time

Same Day/1 to 2 days


Stat Eligible

Coding & Compliance

CDM

01420102


CPT Coding

84520