PTH and Hypocalcemia: Patients with unintentional parathyroidectomy had significantly lower postoperative PTH levels (18.1 ± 20.0 vs. 29.2 ± 23, pg/mL, p < 0.001) and this correlated with a significantly higher incidence of postoperative biochemical hypocalcemia in patients with incidental parathyroidectomy (49.1% vs. 38.1%, p = 0.024).