Calcitonin levels increased in: (A) Hypehyroidism, (B) Hyperparathyroidism, (C) Hypoparathyroidism, (D) Cushing Syndrome
Answer is B. Calcitonin secretion is stimulated by increased serum calcium concentration and calcitonin protects against the development of hypercalcemia. Ref:- Ganong&;s review of medical physiology;