Resources

UREA NITROGEN, BODY FLUID

Test Code
UNBF


CPT Codes
84520

Preferred Specimen
1 Green tube (Lithium Heparin)


Minimum Volume
0.5 mL


Instructions
Centrifuge and perform testing on supernatant


Specimen Stability
2-8°C up to 3 days


Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Extreme viscosity


Methodology

Urease, UV



Setup Schedule
M, T, W, Th, F, Sa, Sun


Performed By
Alverno Laboratories

Performing Laboratory
Alverno Central Lab  
NCHB1 (Chemistry, Beckman AU)


Last Updated: April 25, 2023


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.