Follow instructions for 24 Hour Urine Collection.

1. No preservative is required.
2. To begin collection, empty the bladder and discard this urine. Record this time and date as the start of the collection.
3. 24-Hour urine collections should be started Sunday through Thursday.
4. Collect all urine excreted during the next 24 hours in the urine collection container.
5. Exactly 24 hours after the collection was begun, empty the bladder for the last time. Add this urine to the 24- hour urine container. The collection is finished.
6. Refrigerate urine during collection.

Entire 24 hour urine collection. Alternately, a pour-off sample from a 24 hour urine collection is acceptable but client must measure 24 hour urine volume and indicate the amount on the requisition.

The starting and ending times of collection are required.

81050 - Urine Volume Measurement (EAP 30033360)
82436 - Chloride Urine Quant 24 Hour (EAP 30011320)