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You are here : 3-RX.com > Medical Encyclopedia > Tests and Exams > Calcium in Urine: Results and Values

Calcium in Urine

Alternate Names : Urinary Calcium Excretion, Calcium, 24 Hour Urine

Calcium in Urine | Preparation & Expectations | Results and Values

What do the test results mean?

Normal levels of calcium in urine range from 100 to 300 milligrams per day for persons on a normal diet. For those on a low-calcium diet, from 50 to 150 milligrams per day is normal.

Abnormally high levels of calcium in the urine may indicate:

  • Cushing's syndrome, which is an excess of hormones known as corticosteroids
  • idiopathic hypercalcemia, which is an elevated calcium level in the blood with no known cause
  • milk-alkali syndrome, which is an increased blood calcium level caused by ingesting large amounts of calcium and antacids
  • osteolytic bone disease, which is any disease that destroys bone
  • osteoporosis, a thinning of the bones that commonly occurs in the elderly
  • primary hyperparathyroidism, which is excess activity of the parathyroid gland that causes increased blood calcium levels
  • renal tubular acidosis, a metabolic defect of the kidneys
  • sarcoidosis, a disease, thought to be caused by an abnormal immune system, that causes problems in multiple areas of the body but especially the lungs
  • vitamin D intoxication
  • Abnormally low levels of calcium may indicate:

  • hypoparathyroidism, or low activity of the parathyroid gland
  • malabsorption disorders
  • renal osteodystrophy or thinning of bones caused by kidney failure
  • vitamin D deficiency

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    Calcium in Urine: Preparation & Expectations


    Author: David T. Moran, MD
    Reviewer: Adam Brochert, MD
    Date Reviewed: 09/19/01

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