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Magnesium - Blood Test - In-Store only

Magnesium - Blood Test - In-Store only


Magnesium is an electrolyte essential for neuromuscular function and intermediary metabolism. Magnesium has a strong relationship with the immune system.


Magnesium is an activator of different enzymes and participates in many metabolic processes such as the biological activity of ATP (adenosine triphosphate). Magnesium is necessary for the maintenance of the electrical potential of nervous tissues and cell membranes.

  • What is a magnesium blood test used for?

    A magnesium blood test is ordered to know:

    • If a person does not absorb enough magnesium from the diet.
    • If the kidneys are working properly.
    • If muscle and cardiac activity is correct.

    The magnesium blood test is performed along with calcium, phosphorus, potassium and parathyroid hormone test. A person with low levels of magnesium may also have calcium and potassium deficiency.

    Most cases of magnesium high levels in the blood (hypermagnesemia) occur in people who have kidney failure or who are taking magnesium-containing antacids.

    When the magnesium level in the blood is low (hypomagnesemia) can be due to:

    • The body's inability to absorb the magnesium that is taken in through diet.
    • By renal or gastrointestinal losses.

    The main consequence related to hypomagnesemia is suffering from arrhythmias.

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