Test Code LAB140 Urea Nitrogen, Blood
Specimen Requirement
0.5 mL Serum or Lithium Heparin plasma; SST and PST acceptable.
Specimen Stability
7 days at 20-25° C
7 days at 2-8° C
1 year at -20° C
Testing Schedule
Daily
Reference Range
7 – 22 mg/dL
Testing Department
Chemistry
Method
urease with glutamate dehydrogenase
CPT Code
84520
Additional Testing Locations
This test is also performed daily at the following Altru Clinics:
- Crookston
- Devils Lake
Please contact appropriate lab location for specific test information, as methodology varies by site.