Medicine Increased Serum Calcium and Decreased Serum PO4 may be seen in all of the following, except: A Primary hyperparathyroidism B Hypercalcemia of Malignancy C Vitamin D Intoxication D Familial benign Hypercalcemia 💡 Explanation Increased Serum Calcium and Decreased Serum PO4 may be seen in all of the following, except: ✓ Correct Answer: C. Vitamin D Intoxication