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BCH Order Code LAB140 Urea Nitrogen (BUN), Serum

Performing Laboratory

Boulder Community Health

Specimen Requirements

Container/Tube: Serum gel tube(s)

Specimen Volume: 0.5 mL of serum

Specimen Transport Temperature


Reference Values

0 days: 0-30 mg/dL

≥1 day: 7-23 mg/dL
Critical value (automatic call-back): >100 mg/dL

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding