Patent ID: 6719887
Filing Date: 2004-04-13
Classification: C12Q,G01N

Abstract:
A biosensor, comprising: an insulating base plate having a planar face; an electrode system which is provided on said base plate and has a measurement electrode and a counter electrode; a reaction layer including at least oxidoreductase and an electron mediator; a sample solution supply pathway which includes an opening said electrode system and said reaction layer, and has an air aperture on the termination side thereof; a sample supply portion; and a filter which is disposed between said sample solution supply pathway and said sample supply portion and filters hemocytes, where plasma with hemocytes therein filtered with said filter is sucked into said sample solution supply pathway due to capillarity,characterized in that the central part of a secondary side portion of said filter protrudes into said sample solution supply pathway more than both the right and left ends thereof.