AUTOANALYZER AND ANALYTICAL METHOD

摘要

PROBLEM TO BE SOLVED: To provide a device and a preferable condition of a reagent for highly sensitively measuring a latex immune reaction, by a scattered light measurement method on an autoanalyzer.

SOLUTION: Irradiation light having a wavelength in the range of 0.65-0.75 μm is used and scattered light generated from reaction liquid is received during rotation movement of a reaction vessel 8, by a light receiving angle of 15-35° to an irradiation direction of the irradiation light. A reagent contains latex particles which have an average peak particle diameter of 0.3 μm-0.43 μm and to which an antibody is sensitized. The reaction liquid contains the latex particles in concentration in which absorbance of the irradiation light having a wavelength of 0.7 μm is 0.25 abs-1.10 abs. Light quantity change of the scattered light, caused by agglutination of the latex particles through an antigen in a sample is measured to determine the quantity.

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