Description
Serum magnesium is a blood test that measures the amount of magnesium in your blood. Magnesium is essential for many bodily functions, including muscle and nerve function, heart rhythm, and bone health. This test helps diagnose and monitor conditions related to abnormal magnesium levels, such as kidney disease, malnutrition, and gastrointestinal disorders. Normal serum magnesium levels typically range from 1.7 to 2.2 mg/dL.