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Test Code UUN24 Urea Nitrogen Urine, Timed LAB449

Performing Laboratory

UnityPoint Finley Hospital

Test Method

Enzymatic; Roche Cobas Pro.

Performance

Testing is performed Monday through Sunday.

Typically assayed within 2 hours after specimen arrives at testing site.

Specimen Requirement

0.5 mL urine is required.

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.

Useful For

Assessment of protein intake and/or nitrogen balance

Reference Values

12 – 20 gm/24 hours

CPT Code Information

84540 Chemistry: Urea Nitrogen; Urine