PTH and hyperphosphatemia: But autograftectomy was recommended for patient with PTH > 800 pg/mL and hypercalcemia and/or hyperphosphatemia unresponsive to drug therapy.[3] A single-surgeon retrospective cohort study showed incidence of autograftectomy was greater in the intramuscular autotransplant group (15/65) than the subcutaneous group (14/823).