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HelpTest Code BUN Blood Urea Nitrogen (BUN)
Additional Codes
|
Test ID |
| BUN |
|
EPIC Test ID |
| LAB140 |
Performing Laboratory
St. Luke's Hospital Cedar Rapids
Specimen Requirements
Container/Tube:
Preferred: Green-top (lithium heparin) tube
Acceptable: Gold-top serum gel tube, plain red-top tube, or lavender-top (EDTA) tube
Minimum Specimen Volume: 1.5 µL plus dead volume
Stability: Samples can be kept at 2 – 8°C and analyzed within 7 days. For longer storage,
samples may be frozen at -20°C for 1 year.
Reference Values
|
<1 year: |
4-19 mg/dL |
|
1 year-≤17 years: |
5-18 mg/dL |
|
18-60 years: |
6-20 mg/dL |
|
60-90 years: |
8-23 mg/dL |
Day(s) Test Set Up
Monday through Sunday
Useful For
Measurements of BUN (blood urea nitrogen) are used in the diagnosis and treatment of certain renal and metabolic diseases. Increases in serum urea nitrogen may be due to prerenal, renal or postrenal causes.
Methodology
Urease with Glutamate Dehydrogenase (GLDH)
Test Classification and CPT Coding
84520
Report Available
STAT within 1 hour of receipt
Routine within 2 hours of receipt