Specimen Requirements

Container/Tube:

Preferred: 24-hour urine collection

Specimen Volume: 0.5 mL from a 24-hour timed urine collection. No preservative.

                 Refrigerate specimen during collection, and send specimen refrigerated.

Stability: Urine urea nitrogen is stable at 4-8°C for 4 days.

Collection Instructions: Obtain 24 urine jug from laboratory.

Note: 1. Starting and ending times of collection are required for processing.

           2. When a 24 hour urine for urea nitrogen is done, a PV (period and volume) must also

               be ordered and resulted. (FOR LAB USE ONLY)