Urea Nitrogen, (BUN)

CPT Code(s):

  • 84520

Preferred Specimen:

1 mL serum

Minimum Volume:

0.5 mL

Transport Container:

Red-top tube or gel-barrier tube. (If a red-top tube is used, transfer separated serum to a plastic transport tube.)

Transport Temperature Name:

Refrigerate

Specimen Stability Components:

  • Refrigerated: 3 - 5 days

Testing Schedule:

Daily

Methodology:

UREASE, UV

Reference Range:

7-25 mg/dL

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Genesis