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