Magnesium Test


A magnesium test is used to measure the level of magnesium in the blood.

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There is no preparation needed for this test.
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Collection Method:

Blood Draw
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Sample Type:

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Processing Time:

1 Day


Magnesium Test

Magnesium Test


A magnesium test is used to measure the level of magnesium in the blood.

About The Test

Test Overview

Abnormal levels of magnesium are most frequently seen in conditions or diseases that cause impaired or excessive excretion of magnesium by the kidneys, or by conditions that cause impaired absorption in the intestines. Magnesium levels may be checked as part of an evaluation of the severity of kidney problems and/or of uncontrolled diabetes and may help in the diagnosis of gastrointestinal disorders. Magnesium is an essential mineral vital for numerous bodily functions, including muscle and nerve activity, bone health, heart rhythm regulation, and blood pressure control. Since a low magnesium blood level can cause persistently low calcium and potassium levels, it may be checked to help diagnose problems with calcium, potassium, phosphorus, and/or parathyroid hormone. 

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Common symptoms of magnesium deficiency include muscle weakness, muscle cramps or spasms, tremors, irregular heartbeat, fatigue, and nausea. Excess magnesium, or hypermagnesemia, symptoms may include lethargy, confusion, muscle weakness, and in severe cases, cardiac arrhythmias or difficulty breathing.
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Test Includes


Measures the concentration of magnesium in the blood.

Understanding Results

Any result outside of the provided range indicates an abnormal result. Please follow up with your healthcare provider if your results are abnormal. 
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