Test Code LAB0213124 Urea Nitrogen (BUN), Plasma or Serum
Methodology
Urease
Performing Laboratory
CentraCare Laboratory Services
Specimen Requirements
Specimen Type: Plasma
Container/Tube:
Preferred: Green top (lithium heparin)
Acceptable: Serum (Red top, Gold/SST), Na Heparin plasma (label specimen appropriately)
Specimen Volume: 0.5 mL
Minimum Specimen Volume: 0.25 ml
Specimen Transport Temperature
Refrigerated
Reference Values
0-8 days: 2.0-13.0 mg/dL
8-30 days: 2.0-16.0 mg/dL
1-4 months: 2.0-12.0 mg/dL
4-7 months: 1.0-14.0 mg/dL
7-12 months: 2.0-14.0 mg/dL
1-4 years: 5.0-17.0 mg/dL
4-14 years: 7.0-17.0 mg/dL
>14 years: 10.0-20.0 mg/dL
Day(s) Test Set Up
Monday through Sunday
Test Classification and CPT Coding
84520