Biosensor

A biosensor for electrochemically measuring a sample, provided with:

• a first member made of an insulating material;
• an electrode system including a working electrode and a counter electrode formed on said first member;
• a second member fixed over said first member so as to cover at least a part of said electrode system;
• a sample flow channel provided between said first member and said second member to allow communication between the outside and a part of said electrode system covered by said second member;
• a hydrophilic section provided on at least a part of the internal surface of said sample flow channel and extending from a first end near said electrode system to a second end on the opposite side;
• and
• a flow stop area provided on a section adjacent to said second end on said first member or on the internal surface of said sample flow channel to temporarily stop the flow of said sample into said electrode system.