CA U 24

Calcium, 24 Hour, Urine

EPIC Test Procedure Code: LAB2592

Performing Lab:
Saint Luke's Regional Laboratories
Patient Preparation:

Follow Instructions for 24 Hour Urine Collection:

1. No preservative is required.
2. To begin the 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 the collection.

Container Type:
24 hour plastic urine container or pour-off bottle
Specimen Type:

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.

Minimum Volume:
Entire 24 hour urine collection or 20 - 25 mL (if a pour-off sample is submitted)
Collection Procedure:

The starting and end times of collection are required.

Store and Transport:
Refrigerated
CPT Codes:

81050 - Urine Volume Measurement (EAP 30033360)
82340 - Calcium, Urine Quan Timed (EAP 30010940)

Test Schedule:
Monday through Sunday
Method:
o-cresolphthalein complexone
Reference Ranges:

100 - 300

mg/24 hours

Lab Personnel

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