Calcium (Ca) In Urine: What Affects The Test

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What Affects the Test

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Reasons you may not be able to have the test or why the results may not be helpful include:

Too much or too little calcium in the diet.
Taking medicines, such as diuretics, growth hormones, parathyroid hormone (PTH), antacids, or steroids.
Taking too much vitamin D, lithium, laxatives, theophylline, or aspirin.
Not collecting 24 hours' worth of urine.
Too much sun exposure, which affects vitamin D levels.
Being on bed rest for a long time.

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Last updated:	September 29, 2008
Author:	Monica Rhodes
Reviewed By:	E. Gregory Thompson, MD - Internal Medicine, Tushar J. Vachharajani, MD, FASN, FACP - Nephrology
Editors:	Maria Essig, Tracy Landauer

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