A B C D E F G H I J K L M N O P Q R S T U V W X Y Z #

Blood Urea Nitrogen

Test Code
LAB140


CPT Codes
84520

Instructions
Routine venipuncture. 1 4.5ml Light green top (heparin) tube or 5ml Red/gold top serum separator tube.


Specimen Stability
Refrigerate, stable 48 hours; stable 8 hours at room temperature; stable >48 hours if frozen.


Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Insufficient quantity; failure to follow stability requirements


Methodology
Colorimetric:The reflection density of the dye is measured and is proportional to the concentration of urea in the sample.

Setup Schedule
Daily


Report Available
Within 24 hours


Reference Range
"



Test
Gender
Age
Reference Range
Units


BUN
Male
Any
9-20
MG/DL


BUN
Female
Any
7-17
MG/DL


"


Clinical Significance
Urea nitrogen or urea measurements are used in the diagnosis and treatment of certain renal and metabolic diseases.




The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.