| abstract |
(57) [Problem] To provide a biosensor capable of easily dissolving a reaction reagent system even in a sample liquid containing a high concentration of a substrate and capable of quickly and accurately measuring. SOLUTION: A material for forming a reaction layer is dissolved in a solvent composed of a substance having a sublimation property, and the solution is placed at a position where a reaction layer is formed, and the solution is frozen. A reaction layer is formed by a method of sublimating and removing the solvent in the substance. By adopting this method, the surface area of the reaction layer is large, it is easy to dissolve in the sample solution, and rapid measurement becomes possible. |