Hypocalcemia may be subdivided into nonionized hypocalcemia (decrease in serum total calcium value) and true hypocalcemia (decrease in ionized calcium value). Selected Etiologies of Hypocalcemia Artifactual Hypoalbuminemia Hemodilution Primary hypoparathyroidism Pseudohypoparathyroidism Vitamin D-related Vitamin D deficiency Malabsorption Renal failure Magnesium deficiency Sepsis Chronic alcoholism Tumor lysis syndrome Rhabdomyolysis Alkalosis (respiratory or metabolic) Acute pancreatitis Drug-induced hypocalcemia […]