Calcium

Label Mnemonic:	UCA
Epic code:	LAB580
Downtime form:	Doctor/Provider Orders - Pathology Core and Specialty Care Nursery

Chemistry
6240 RCP
356-3527

Specimen(s):

Urine Quantitative

Collection Medium:

Urine - 24 hour/timed plastic urine container

Alternate Collection Media:

Call laboratory for additional acceptable specimen collection containers.

Minimum:

24 hr urine; no preservative.  Collection other than 24 hr will 
not be calculated for mg/24 hr.

Testing Schedule:

24 hrs/day, 7 days a week, including holidays.

Turn Around Time:

3 hours (upon receipt in laboratory)

Reference Range:

Due to variations in urinary calcium that vary in part based on 
diet, no reference range used in Epic.

24-Hour urinary calcium concentrations vary with amount of calcium in 
diet.
  Calcium-free diet: 5-40 mg Ca/day in urine
  Low to average calcium intake (up to 800 mg/day): 50-300 mg Ca/day
     in urine
  High calcium diet (800 mg/day or more): > 250 mg Ca/day in 
urine

Comments:

This test is also performed in the Iowa River Landing (IRL) clinical laboratory (for specimens drawn at that site).

Methodology:

Colorimetric

CPT Code:

82340

See Additional Information:
Collection and Preservation of 24-Hour Urine Specimens
Urine Tests Requiring no Preservatives