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Test Code BUN Urea Nitrogen (BUN), Plasma or Serum

Methodology

Enzymatic Rate

Performing Laboratory

Sky Lakes Medical Center-Chemistry

Specimen Requirements

Submit only 1 of the following specimens: Specimen Type: Plasma. Container/Tube: Green top (lithium heparin gel).Specimen Volume: 2 mL. Collection Instructions: Label specimen appropriately (plasma ). Specimen Type: Serum. Container/Tube: Red top or serum gelSpecimen Volume: 2 mL. Collection Instructions: Label specimen appropriately (serum).

Specimen Transport Temperature

Refrigerate/Ambient OK

Reference Values

0-2 months: 4.0-15.0 mg/dL; 3 months-18 years:7.0-18.0 mg/dL; 18 years: 6.0-20.0 mg/dL. Critical values (automatic call-back):100 mg/dL

Day(s) Test Set Up

Monday through Sunday Available STAT

Test Classification and CPT Coding

84520

Test Order Code

LAB140