Electrochemical biosensor test strip with small specimen quantity for determining biochemical substance concentration in specimen has reaction zone protruding beyond end of substrates so edge of reaction zone is completely exposed

摘要

The device has first and second insulating substrates (11,12) stuck together on both sides with a working electrode (21) and a counter electrode (22) provided between them and a reaction zone (13) protruding beyond one end of the first and second substrates where they are not joined to each other so that the edge of the reaction zone is completely exposed.