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Blood Urea Nitrogen (BUN)

Test Name:Blood Urea Nitrogen (BUN)
Epic Order Code:LAB140  
CPT Code:84520  
Specimen(s) Type:Plasma or Serum
Acceptable Container(s):Tops are light green and gold
Testing Schedule:24 hrs/day, 7 days/week
Turn Around Time:STAT: 1 hour  
 Routine: 2 hours  
Collection Information:No special patient preparation is required. Obtain specimen by standard collection procedures.
Transport Information:Deliver to lab immediately. All specimens must be signed into the laboratory.
Reference Clients:If unable to deliver to the lab within 1 hour, centrifuge the specimen and remove plasma/serum from the red cells. Store and transport at 2-8° C. Specimen must be received in the lab within 24 hours.
Causes for Rejection:Improperly labeled, incorrect container, contaminated, insufficient quantity, incorrect/delay in transport.
Reference Range:0 - 1 yr:4.0 - 19.0 mg/dL 
 1 - 18 yrs:5.0 - 18.0 mg/dL 
 18 - 60 yrs:6.0 - 20.0 mg/dL 
 > 60 yrs:8.0 - 23.0 mg/dL 
Additional Information:Test included in BMP, CMP and Renal Panel