BIOSENSOR AND METHOD OF PRODUCING THE SAME

摘要

In a biosensor comprising a pair of conductive lead parts 2 and 3 formed on an insulating substrate 1, a working electrode 4 and a counter electrode 5 formed at the ends of the conductive lead parts 2 and 3, respectively, and a reaction layer 7 which is formed so as to bridge the both electrodes and reacts with a measurement target substance in a specimen liquid, and measuring the content of the measurement target substance from an electric current value based on the reaction between the measurement target substance and the reaction layer 7, which current value is obtained through the pair of conductive lead parts 2 and 3, the reaction layer 7 which contacts the electrodes 4 and 5 is not provided above at least one of the conductive lead parts 2 and 3 so that the reaction layer 7 and the conductive lead parts 2 and 3 do not contact directly even when pin holes or cracks are generated in the both electrodes. The biosensor constructed as described above has high reliability and reproduction accuracy, and is able to improve preservation stability. <IMAGE>