Test Code 097 Urea Nitrogen Urine, Timed
Additional Codes
ALAB: UREAIUT
PowerChart: Urea Nitrogen Timed Urine
MA Cerner: Urea Nitrogen, Timed Urine
Test Method
Enzymatic-Conductivity Rate Method; Beckman DXC880i
Specimen Requirement
0.5 mL urine is required.
Additional Specimen Collection Information
Collect a 24 hour urine specimen in a sterile container. No preservative is required. Keep the specimen chilled during the collection period. Label the specimen appropriately with two identifiers, patient name and another identifier, (patient ID number, DOB, etc.) include specimen source, date and time of collection. Record the collection time period on the label and specimen container. Store the urine specimen refrigerated and transport to the lab within 48 hours.
Performance
Testing is performed Monday through Sunday.
Typically assayed within 2 hours after specimen arrives at testing site; Mercy DV and MA West within 24 hours.
Reference Values
12 - 20 gm/24 hours
CPT Code Information
84540 Chemistry: Urea Nitrogen; Urine
Useful For
Assessment of protein intake and/or nitrogen balance
LOINC Code Information
12967-6 Urea Nitrogen [Mass/Volume] In 24 Hour Urine