Magnesium Unit Converter

Magnesium is an essential mineral that acts as a cofactor in over 300 enzymatic reactions in your body, including energy production, protein synthesis, and nerve function.

About 50-60% of your body's magnesium is stored in bones, with the rest found in muscles, soft tissues, and other organs. Less than 1% circulates in the blood, which is what this test measures.

Because serum levels are tightly regulated and represent only a small fraction of total body stores, a normal blood magnesium level does not always rule out deficiency. Levels may remain normal even when body stores are depleted by up to 20%.

Magnesium comes from the diet and is absorbed primarily in the small intestine and colon. The kidneys regulate magnesium balance by adjusting how much is excreted in urine.