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By mouth: Maintains calcium and phosphorus in your body and makes your bones strong. This medicine is a vitamin.

Oral route, Parenteral route: Vitamins are compounds that you must have for growth and health.

UsesSide effectsLatest evidence reviewsResearch summaries for consumersBrand names

25-hydroxy vitamin D test

The 25-hydroxy vitamin D test is the most accurate way to measure how much vitamin D is in your body.

Tests and Treatments - Last reviewed: July 19, 2012

Parathyroid hormone (PTH) blood test

The PTH test measures the level of parathyroid hormone in the blood.

Tests and Treatments - Last reviewed: November 7, 2013

Calcium blood test

The calcium blood test measures the level of calcium in the blood.

Tests and Treatments - Last reviewed: October 29, 2013

Citric acid urine test

Citric acid urine test measures the level of citric acid in urine.

Tests and Treatments - Last reviewed: November 5, 2013

Phosphorus blood test

The phosphorus blood test measures the amount of phosphate in the blood.

Tests and Treatments - Last reviewed: October 29, 2013

Calcium - ionized

Ionized calcium is calcium in your blood that is not attached to proteins. It is also called free calcium.

Tests and Treatments - Last reviewed: May 5, 2013

Hormone levels

Blood or urine tests can determine the levels of various hormones in the body. This includes reproductive hormones, thyroid hormones, adrenal hormones, pituitary hormones, and many others. For more information, see:

Tests and Treatments - Last reviewed: August 16, 2011

Calcium - urine

This test measures the amount of calcium in urine. All cells need calcium in order to work. Calcium helps build strong bones and teeth. It is important for heart function, and helps with muscle contraction, nerve signaling, and blood clotting.

Tests and Treatments - Last reviewed: May 11, 2013

Calcitonin blood test

The calcitonin blood test measures the level of the hormone calcitonin in the blood.

Tests and Treatments - Last reviewed: November 7, 2013

ALP isoenzyme test

Alkaline phosphatase (ALP) is an enzyme found in all body tissues. There are many different forms of ALP called isoenzymes. The structure of the enzyme depends on where in the body it is produced. This test is most often used to test ALP made in the tissues of the liver and bones.

Tests and Treatments - Last reviewed: May 5, 2013

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