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To indicate sufficiency of dietary calcium intake and rate of absorption. Urine calcium levels are also used to assess bone resorption, kidney stones, and renal loss of calcium.
Urine from an unpreserved random or timed specimen collected in a clean plastic collection container.
|Age||Conventional Units*||SI Units (Conventional Units × 0.025)*|
|Infant and child||Up to 6 mg/kg per 24 hr||Up to 0.15 mmol/kg per 24 hr|
|Adult on average diet||100–300 mg/24 hr||2.5–7.5 mmol/24 hr|
|*Values depend on diet.|