Calcium, urine (UCa), 24 hour
20–300 mg/24 hr
[2.5–7.5 mmol/24 hr or 2.3–3.3 mmol/12 hr]
(for persons with average calcium intake, ie, 600–800 mg/day)
Urine bottle containing hydrochloric acid
$$$
Collect 24-hour urine or 12-hour overnight urine. Refrigerate during collection.
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