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Test Code BUN Blood Urea Nitrogen

Specimen Requirements

Container/Tube: GRN/RED
Preferred: Plasma
Acceptable: Serum
Specimen Volume: 1.0 mL

SPECIMEN PROCESSING and HANDLING

Complete clot formation should take place before centrifugation. Serum or plasma should be physically separated from cells as soon as possible with a maximum limit of two hours from the time of collection.

TRANSPORT TEMPERATURE

Blood urea nitrogen is stable in separated serum or plasma at room temperature for 3-5 days, 7 days at 4 °C and indefinitely at -20 °C.

PERFORMING LAB

WKMC, WKB, WKP, WKS