Collection Notes: Urine specimens should be collected in a bottle containing 10 mL of 6 M HCl per 24-hour specimen
Clinical Utility: Urinary calcium levels are an indication of dietary intake, the rate of calcium absorption via the intestines, and the reabsorption of calcium into the bones.
Urine (10 mL), HCl Additive
Refrigerated 2 Days
Frozen 6 Months
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