PTH and thyroid cancer: However, in another meta-analysis, the significant predictors of transient hypocalcemia were younger age, female sex, parathyroid autotransplantation, inadvertent parathyroid excision, Graves’ disease, thyroid cancer, central compartment clearance, severe preoperative vitamin D deficiency, and low postoperative 24-hour parathyroid hormone (PTH) levels3.