abstract |
An object of the present invention is to provide a biosensor capable of measuring with high accuracy. A biosensor having an insulating substrate, an electrode including at least a working electrode and a counter electrode formed on the insulating substrate, and a sample supply unit formed on the electrode. The sample supply unit comprises an oxidoreductase containing at least pyrroloquinoline quinone (PQQ), flavin adenine dinucleotide (FAD) or flavin mononucleotide (FMN) as a prosthetic group, an electron carrier, a surfactant, A biosensor having a reaction layer containing glucose. [Selection figure] None |