Pharmacology The following statements regarding calcitonin are true except: A It has a short term used in patients with hypercalcemia. B It inhibits osteoclastic activity. C High concentrations in the plasma are seen in medullary carcinoma of the thyroid. D Its actions are similar to parathyroid hormone. 💡 Explanation The following statements regarding calcitonin are true except: ✓ Correct Answer: D. Its actions are similar to parathyroid hormone.