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HelpTest Code BUN (serum) Blood Urea Nitrogen
Aliasis
BUN
Patient Preparation
No special patient preparation required
Collection Method
Venous collection
Minimum Volume
|
Adult: |
1.0 mL |
|
Pediatric: |
0.5 mL |
Container
Lt Green / Plasma Separator / Lithium Heparin
Preferred Specimen
Light Green Top (lithium heparin) plasma
Acceptable Specimen(s)
Serum: Red Top
Plasma: Light Green (lithium heparin)
Reference or Target Ranges
Adults (Serum/Plasma): 9-23 mg/dL
Reportable Units
|
Serum/Plasma: |
mg/dL |
Critical Value
|
Serum or Plasma: |
≥ 100 mg/dL |
Reasons for Rejection
|
Hemolysis Threshold: |
200 – 500 mg/dL |
|
Icterus Threshold: |
30 mg/dL (conjugated) |
|
|
30 mg/dL (unconjugated) |
|
Lipemia Threshold: |
650 mg/dL |
|
Other: |
QNS, contaminated, improperly labeled, improper specimen type |
Specimen Stability
|
Ambient |
3 – 5 Days |
|
Refrigerated |
7 Days |
|
Frozen |
1 Year |
Performance Information
|
Days and Time Performed |
24/7 |
|
Expected Turn Around Time |
Stat: 1 Hour, Routine: 4 Hours |
|
Stat Availability |
Yes |
|
Performing Bench |
CRMC Chemistry |
|
Methodology/Method Description |
Atellica |
Methodology/Method Description
Atellica CH Analyzer
CPT Codes
84520