LATEX PARTICLE FOR MEASUREMENT REAGENT, SENSITIZED LATEX PARTICLE, AND MEASUREMENT REAGENT FOR IMMUNONEPHELOMETRY

摘要

An object of the present invention is to provide a latex particle for a measurement reagent with which highly sensitive measurement can be performed even in measuring a measurement sample containing a test substance in a dilute concentration. The preset invention relates to a latex particle for a measurement reagent including a copolymer obtained by copolymerizing a monomer mixture containing the following polymerizable monomers (a) to (c):
(a) a polymerizable monomer having a phenyl group;
(b) a polymerizable monomer having a phenyl group and a sulfonate; and
(c) a polymerizable monomer having a naphthyl group,
in an aqueous medium containing 7.5 to 25% by weight of C 1-4 alcohol without using a surfactant.