hypomagnesemia level

What Is Considered Severe Hypomagnesemia? Severe hypomagnesemia usually results in concentrations of < 1.25 mg/dL (< 0.50 mmol/L). Associated hypocalcemia and hypocalciuria are common. Hypokalemia with increased urinary potassium excretion and metabolic alkalosis. What magnesium level is too high? Magnesium levels between 7 and 12 mg/dL can impact the heart and lungs, and levels in