Endocrine Abstracts

Background: The diagnosis of pheochromocytoma and paraganglioma (PPGL) requires the measurement of plasma metanephrines; however, several pre-analytical parameters can lead to false positive test results. During venipuncture, pain perception may activate the sympathetic nervous system, increasing catecholamine metabolite levels. Furthermore, hypertension patients exhibit sympathetic hyperactivity compared to normotensive subjects. The purpose of this study was to compare the p...