Calcium, urine, 24-hour

Calcium, urine, 24-hour is a topic covered in the Guide to Diagnostic Tests.

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Test/Range/Collection

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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