Biosensor, and biosensor measuring device and method

A biosensor measuring apparatus for measuring a test substance included in a sample by using a biosensor including a substrate;

• a sample receiving section provided on said substrate and containing a reagent section including a reagent to be reacted with said test substance;
• and a moisture absorbing material changed in color through absorption of moisture, comprising:
• a detecting section including a light source for irradiating said moisture absorbing material with light and a photo detecting device for receiving incident light emitted from said light source through said moisture absorbing material;
• and
• a measuring section connected to said detecting section for measuring an optical characteristic of said incident light and for determining a degree of degradation of said reagent included in said reagent section of said biosensor on the basis of said optical characteristic of said incident light.

A measurement method for measuring a test substance included in a sample by using a biosensor including a substrate;

• a sample receiving section provided on said substrate and containing a reagent section including a reagent to be reacted with said test substance;
• and a moisture absorbing material changed in color through absorption of moisture, comprising the steps of:
• fitting said biosensor on a biosensor measuring apparatus;
• determining a degree of degradation of said reagent on the basis of a degree of color change of said moisture absorbing material;
• and
• measuring said test substance under measurement when the degree of degradation of said reagent is determined to be small in the determining step and stopping to measure said test substance under measurement when the degree of degradation of said reagent is determined to be large.