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Calcium - urine

• Overview
• Risks
• Results

Alternative Names:

Urinary Ca+2

Normal Values:

If a person is eating a normal diet, the expected amount of calcium in the urine is 100 to 300 mg/day. If eating a diet low in calcium, the amount of calcium in the urine will be 50 to 150 mg/day.

Note: mg/day = milligrams per day

What abnormal results mean:

High levels of urine calcium may be due to:

• Hyperparathyroidism
• Idiopathic hypercalciuria
• Kidney failure
• Milk-alkali syndrome
• Renal tubular acidosis
• Sarcoidosis
• Use of loop diuretics
• Vitamin D intoxication

Low levels of urine calcium may be due to:

• Hypoparathyroidism
• Malabsorption disorders
• Use of thiazide diuretics
• Vitamin D deficiency

• Review Date: 5/15/2007
• Reviewed By: Robert Mushnick, M.D., Clinical Assistant Professor, Department of Nephrology, SUNY Downstate Health Center, Brooklyn, NY. Review provided by VeriMed Healthcare Network.

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