paraproteinemia

noun
para·​pro·​tein·​emia
variants: or chiefly British paraproteinaemia \ -​ˌprō-​tē-​ˈnē-​mē-​ə, -​ˌprōt-​ē-​ə-​ˈnē-​ How to pronounce paraproteinaemia (audio) \

Medical Definition of paraproteinemia

: the presence of a paraprotein in the blood