Test Code UBUN24 Urea Nitrogen, U, Timed
Additional Codes
St. Luke's Compendium Code (Iatric): L650.1075
Performing Laboratory
St. Lukes Hospital Laboratory
Methodology
Urease
Specimen Requirements
10 mL from a well-mixed, 24-hour urine collection. No
preservative. Refrigerate specimen during collection, and send
specimen refrigerated.
Note: 1. 24-Hour volume and
starting and ending times are required on request
form for processing.
2. Follow instructions in “Urine Collection” in
“Special Instructions.”
Reference Values
12-20 g/24 hr
Day(s) Test Set Up
Monday through Sunday
Test Classification and CPT Coding
84540