Freedom from Drug Interference in New Immunoassays for Urinary Catecholamines and Metanephrines

Abstract

None of the drugs examined in this study interfered in the measurement of free catecholamines or total metanephrines by these immunoassays. The technique is easier to use, requires less equipment, and is more accessible than HPLC. In combination, these assays are suitable as initial screening tests for pheochromocytoma.