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Test Code BUN Blood Urea Nitrogen

Cerner Test Code

BUN

Acceptable Collection Tube(s) or Specimen

Preferred: GRN PST

Acceptable: Gold SST or Red Top

Specimen Draw Volume

Volume: 1.0 mL

Minimum Volume: 0.5 mL

Processing Instructions

Draw in a Green PST, centrifuge, and refrigerate.

Stability

Stability: Room Temp 3-5 days, Refrigerated 7 days, Frozen indefinitely

Performed Test Frequency

Everyday

CPT(s)

84520

Methodology

Urease with GLDH

Performing Location

MercyOne Des Moines Laboratory, Chemistry

Clinical Significance

Urea nitrogen measurements are used in the diagnosis and treatment of kidney disease, urinary tract obstruction, and acute or chronic renal failure.