Case Report: Falsely elevated PTH level in a young woman caused by immunoassay interference resulting from macro-PTH - Perruolo, Giuseppe; Santarpia, Lidia; Morelli, Cristina; Rendina, Domenico; Mormone, Federica; Ferraro, Giusy; Formisano, Pietro; Oriente, Francesco (Frontiers in Endocrinology, 2025)