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Test Code BUN Blood Urea Nitrogen

Alias

BUN

Collection Method

Venous Collection

Container

Light Green Lithium Heparin tube

Instructions/Special Handling

None

Preferred Specimen

Light Green (Lithium Heparin) Plasma

Acceptable Specimes

  • Serum
    • Gold SST tube
    • Red tube
  • Plasma
    • Light Green lithium heparin

Units

mg/dL

Reference Ranges

Adult (>18 years old):  8 - 25 mmol/L

Pediatric (0 days - 18 years):  9 - 19 mmol/L

Critical Values

N/A

Reasons for Rejection

Hemolysis N/A
Icterus N/A
Lipemia Grossly Lipemic
Other QNS, Contaminated, Improperly labeled, Improper specimen type

 

Specimen Stability

Ambient (15-25°C) 7 days
Refrigerated (2-8°C) 7 days
Frozen (-20°C) 1 year

 

Performing Site

Boone Health Laboratory

Performance Information

Days/Times Performed Daily 24/7
Expected Turn around Time Same day
Methodology/Method Description Roche Cobas - Kinetic UV assay

 

CPT Code(s)

84520

Panel Components

N/A