Magnesium

Also known as: Mg

Related tests: Calcium, Potassium, Phosphorus, Parathyroid hormone (PTH), Vitamin D

At a Glance

Why Get Tested?

To evaluate the level of magnesium in your blood and to help determine the cause of abnormal calcium and/or potassium levels

When to Get Tested?

If you have symptoms (such as weakness, irritability, cardiac arrhythmia, nausea, and/or diarrhea) that may be due to too much or too little magnesium or if you have abnormal calcium or potassium levels

Sample Required?

A blood sample drawn from a vein in your arm

This article was last reviewed on November 17, 2006. | This page was last modified on March 6, 2010.

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