Magnesium (Mg)

How To Prepare

Many medicines may change the results of this test. Be sure to tell your doctor about all the non-prescription and prescription medicines you take. Do not take medications containing magnesium for at least 3 days before this test. This includes antacids that contain magnesium, laxatives (such as milk of magnesia or Epsom salts), magnesium supplements, and some diuretics.

Talk to your doctor about any concerns you have regarding the need for the test, its risks, how it will be done, or what the results will mean. To help you understand the importance of this test, fill out the medical test information form(What is a PDF document?).

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Author:	Carrie Henley Sydney Youngerman-Cole, RN, BSN, RNC	Last Updated: August 1, 2006
Medical Review:	Martin Gabica, MD - Family Medicine Adam Husney, MD - Family Medicine Tom Bailey, MD - Family Medicine
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