Elevated serum calcium (>10.7 mg/dl) and elevated serum PTH (BOTH)
Postoperative patients with known parathyroid adenoma with persistent or recurrent hyperparathyroidism to detect residual or ectopic parathyroid tissue
Reference: ACR–SPR PRACTICE PARAMETER FOR THE PERFORMANCE OF PARATHYROID SCINTIGRAPHY
Revised 2019 (Resolution 38)