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 #

Urea Nitrogen

Test Code
LAB140


Alias/See Also
BUN


CPT Codes
84520

Preferred Specimen
1 mL serum collected in a serum separator tube (SST®)


Minimum Volume
1 mL Serum


Other Acceptable Specimens
Lithium heparin (green top) Urine


Instructions
Allow complete clot formation. Spin sample within 2 hours of collection


Transport Temperature
Room Temperature


Specimen Stability
Room temperature: 3-5 days
Refrigerated: 1 week
Frozen: 1 month




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.