PARTICLE HAVING MAGNETIC MATERIAL INCORPORATED THEREIN, PROCESS FOR PRODUCING THE SAME, PARTICLE FOR IMMUNOASSAY AND METHOD OF IMMUNOASSAY

摘要

Particles having a magnetic material incorporated therein that exhibit uniform magnetism, excelling in dispersion stability and have a narrow particle diameter distribution; a process for producing the same; particles for immunoassay comprising the above particles; and a method of immunoassay in which use is made of the particles having a magnetic material incorporated therein or particles for immunoassay. In particular, particles having a magnetic material incorporated therein which comprise an organic polymeric material and a magnetic material of 1 to 30 nm average particle diameter, the magnetic material incorporated in dispersed form in the particles.