Parathyroid Hormone (PTH) - Intraoperative (View in report form.)
CERNER / EPIC MNEMONIC:
Intraoperative Parathyroid Hormone
Plasma intact PTH determinations are performed immediately prior to the neck incision (baseline), following neck exploration (manipulation) and at 5, 10 and 20 minutes after beginning parathyroid resection. Frozen sections are performed on tissue per surgeon's request based on clinical indication. The generally accepted guideline that a 50% or greater decrease from baseline PTH value is considered indication of successful removal of the hyperfunctioning parathyroid tissue. When used intraoperatively to verify a decline in PTH production after resection, it is recommended that two or more samples be collected at least 5-10 minutes apart.