Patent ID: 6599407
Filing Date: 2003-07-29
Classification: C12Q

Abstract:
A biosensor comprising:an electrode system including a working electrode and a counter electrode, for forming an electrochemical measurement system by coming in contact with a supplied sample solution; an electrically insulating supporting member for supporting said electrode system; a first reagent layer formed on said working electrode; and a second reagent layer formed on said counter electrode, wherein said first reagent layer comprises an enzyme as the main component, and said second reagent layer comprises an electron mediator as the main component, and wherein said supporting member comprises an electrically insulating base plate and an electrically insulating cover member for forming a sample solution supply pathway or a sample solution storage section between said cover member and said base plate, said working electrode is formed on said base plate, and said counter electrode is formed on an inner surface of said cover member so as to face said working electrode.