Endocrine Abstracts

Introduction: Macrohormones are complexes of monomeric hormone molecules with IgG leading to formation of macrocomplexes. They are usually immunoreactive, but biologically inactive. The higher molecular weight results in reduced renal clearance and therefore accumulation in the blood. We present two cases of unusual macrohormones.Case 1: A 55-year-old male had his thyroid function checked as part of investigation for chest pain, and was started on thyrox...