| 摘要 |
The present invention has: a reaction disk in which cells containing a reaction solution mixed from a sample and a reagent are held on a circle, and which is repeatedly rotated and stopped; and a scattered light measurement unit for illuminating the cells with illuminating light from a light source while the reaction disk rotates, and measuring scattered light subsequent to interaction with the reaction solution in the cells. The scattered light measurement unit receives scattered light of angles of less than 15° from the optical axis of the illuminating light, and measures the change over time in the quantity of light received by the scattered light measurement unit using, as the reagent, a latex reagent having a particle diameter of 450 to 875 nm, inclusive, obtained by sensitizing an antibody that recognizes a measured substance. The scattered light measurement performs the measurements by way of reaction process data of an agglutination reaction of a reaction solution mixture of the latex reagent and a sample containing the measured substance, and quantifies the measured substance present in the sample. |
