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24-Hour Urine Calcium
MessageDay(s) Test Set Up: Monday through Sunday
Test Code
UCA24
CPT Codes
81050, 82340
Preferred Specimen
Urine
Instructions
Submit an entire 24-hour urine collection in a urine container supplied. No preservative. Send specimen refrigerated. Note: Starting and ending times of collection and total volume are required on request form for processing. See "Urine Collection" in "Special Instructions."
Transport Temperature
Refrigerated.
Methodology
Colorimetric
Reference Range
Average calcium intake diet: 0.05 - 0.4 g/24 hrs
Clinical Significance
Useful for determining the amount of calcium excreted in urine.
Last Updated: January 31, 2020