What Is the Normal Serum Calcium Level Range?


Quick Answer

A normal serum calcium level ranges from 8.5 to 10.2 milligrams per deciliter, according to MedlinePlus. Because normal ranges sometimes differ based on the laboratory, samples and measurements used, it's best for patients to talk to their doctors about the meaning of individual results.

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Full Answer

Calcium levels may be higher in patients who have been on prolonged bedrest, consume too much calcium, have an overactive thyroid gland or take medications such as lithium, tamoxifen or thiazides, notes MedlinePlus. Low calcium levels can occur as a result of kidney failure, vitamin D or magnesium deficiency, liver problems or certain disorders that impair nutrient absorption in the intestines.

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