Intraoperative parathyroid hormone levels in thyroid surgery are predictive of postoperative hypoparathyroidism and need for vitamin D supplementation

An ioPTH level less than 10 pg/mL at closure is a strong predictor of hypoparathyroidism after thyroid surgery. Patients with ioPTH levels less than 10 pg/mL at closure should be placed on vitamin D supplementation after surgery to anticipate decreased parathyroid gland function and to avoid symptomatic hypocalcemia.