Magnesium (Mg)

Why this test?

For the diagnosis of diseases that cause a decrease or increase in the excretion of magnesium by the kidneys, as well as a violation of its absorption in the intestines.

To assess the severity of kidney disease and/or diabetes. For the diagnosis of diseases of the gastrointestinal tract.

In order to establish the cause of low levels of calcium, potassium, phosphorus and / or parathyroid hormone, as all these conditions are affected by a decrease in the level of magnesium in the blood.

To control the effectiveness of therapy with magnesium injections.

In what cases is it prescribed?

Searching for reasons for consistently low levels of calcium and/or potassium. When a person has symptoms that indicate magnesium deficiency: muscle weakness, convulsions, confusion, insomnia. As part of the examination, the severity of malabsorption, malnutrition, diarrhea, or alcoholism is assessed.

When treated with drugs that cause excessive loss of magnesium in the urine. In case of kidney damage in patients with diabetes, together with a creatinine and urea test (in order to evaluate kidney function and exclude excessive loss or retention of magnesium in the body). During replacement therapy, disturbances in calcium and phosphorus metabolism.

Test Information

Magnesium is a vital mineral that is involved in energy production, muscle contraction, nerve impulse conduction, and bone structure. It enters the body from food, being absorbed in the small and large intestines.

Magnesium is mainly concentrated in bones, cells, and tissues. About 1% of the total amount of magnesium is in the blood. The body maintains magnesium levels by regulating its absorption in the gastrointestinal tract and excretion through the kidneys. Lack of magnesium (hypomagnesemia) can be caused by its loss in the urine, malnutrition, as well as conditions accompanied by malabsorption (impaired absorption).

An excess of magnesium (hypermagnesemia) sometimes occurs after an overdose of antacids containing its compounds and when the excretory function of the kidneys decreases. People with a moderate deficiency of this mineral may not show symptoms.

Long-term and significant lack of it is accompanied by nausea, loss of appetite, fatigue, confusion, muscle spasms, numbness or tingling in the limbs. Magnesium levels are not checked as often as other trace elements.
Basically, its determination is carried out with significant changes in the level of calcium and with the above-mentioned symptoms of its lack.