Kabushiki Kaisha Toshiba

Masanori Sugitani

Ikuo Uematsu

Hideo Eto

Tomohiro Takase

Ichiro Tono

Kayoko Oomiya

Masami Hirata

Shingo Kasai

Kenichi Uchiyama

Isao Kishimoto

Tsutomu Honjoh

Shinpei Kawakami

Masatoshi Kato

Koji Yanae

The method for measuring the concentration of the measuring object uses a sensor chip comprising an optical waveguide layer and an antibody immobilized layer formed on the surface of the optical waveguide layer, which comprises immobilizing the measuring object and an enzyme-labeled antibody labeled with a labeling enzyme on the antibody immobilized layer of the sensor chip having an immobilized antibody, producing a color-developing and precipitating enzyme reaction product by allowing to react a coloring reagent with the labeling enzyme on the antibody immobilized layer to precipitate the enzyme reaction product on the antibody immobilized layer, allowing to totally reflect a light impinged on the sensor chip from the outside at an interface between the optical waveguide layer and the antibody immobilized layer, and observing to a physical value of the totally reflected light.

Concentration measuring method, concentration measuring kit, and sensor chip for use in the method

Growing community of inventors

Yokohama, Japan

Masanori Sugitani