Moreover, the accuracy of an absolute PTH level to predict temporary hypocalcemia ranges from 34% to 100%, while the accuracy for a change in PTH ranges from 72% to 100%; however, the development of hypocalcemia despite a normal PTH level is up to 54% for an absolute PTH value and up to 50% for a percentage change in PTH, suggesting that even patients with a normal PTH can develop hypocalcemia [13]. This evidence concerns the gene PTH and Hypocalcemia.