CARRIER PARTICLE LATEX FOR ASSAY REAGENT AND ASSAY REAGENT

摘要

A carrier particle latex for assay reagents is made from a copolymer of a polymerizable monomer having a phenyl group with a polymerizable monomer having both a phenyl group and a sulfonic acid salt, wherein the carrier particles have a content of surface sulfo groups of 0.005-0.7 mu mol/m 2> and an average diameter of 0.01-1.5 mu m. Independent claims are also included for the following: (1) a similar carrier particle latex in which the carrier particles are composed of not less than 2 types of particles with different contents of surface sulfo groups; or the particles have average diameter of 0.04-0.1 mu m and CV (coefficient of variation) of the particle diameter being 8-20%; and (2) assay reagents with the carrier particles carrying substances specific for the substance to be tested.