Use

This panel is a series panel requiring multiple tubes to be drawn at multiple time points: baseline and then after administration of a stimulant (pill, shot, or glucola) to measure calcitonin response over time. It is used to assess stimulated calcitonin secretion, which may aid in diagnosis of C‑cell hyperplasia or medullary thyroid carcinoma, particularly when baseline levels are not elevated, and to evaluate response to provocative testing using calcium, pentagastrin, or both.