Hypocalcemia Workup - Differential Diagnosis Algorithm • Low Magnesium, High Magnesium - Functional Hypoparathyroidism • High Phosphate, Low PTH - Hypoparathyroidism: Autoimmune, Genetic, Post-surgical, Post-radiation, Infiltrative disorders, HIV • High Phosphate, High PTH - Pseudohypoparathyroidism, Vitamin D resistance, Vitamin D deficiency, CKD • Low Phosphate - Vitamin D deficiency • Drugs: Calcium Chelators, Lactate, Citrate, EDTA, Bisphosphonates, Denosumab, Cinacalcet, Cisplatin, Fluorouracil/Leucovorin, Phenytoin, Foscarnet, Fluoride poisoning • Extravascular deposition: Hyperphosphatemia, Acute Pancreatitis, Sepsis, Osteoblastic metastases, Hungry bone syndrome Dr. Aisha Shaikh @aishaikh #Hypocalcemia #Workup #Differential #Diagnosis #Algorithm #nephrology #calcium
