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This Magnesium Blood Test measures the amount of magnesium in the blood serum and analyzes it for toxicity. This is a common blood serum test for those living with kidney disease or disorders. Magnesium deficiencies can lead to cramping, fatigue, nausea, and heart conditions. An excess of magnesium can contribute to kidney failure or Addison disease. Those with magnesium deficiencies might consider adding more spinach, fish, and nuts to their diets as these foods are rich in magnesium. Identify what your magnesium levels are with our accurate Magnesium Blood Test.