This passage formation minute needle equipped sensor is connected, the minute needle section and the passage of the resin make where the passage in order to absorb the body fluids was formed, the sensor section and the sensor section in order to detect the specific component which is included in the body fluids which are stored in the liquid accumulating section and the liquid accumulating section which store the body fluids are arranged, in order to cover the liquid accumulating section, with the passage which was formed to the cover and the minute needle section which are arranged and through the liquid accumulating section, the air hole which is connected have.この流路形成微細針付きセンサは、体液を吸引するための流路が形成された樹脂製の微細針部と、流路と接続され、体液を貯留する液溜り部と、液溜り部に貯留された体液に含まれる特定成分を検出するためのセンサ部と、センサ部が配置され、液溜り部を覆うように配置されるカバー部と、微細針部に形成された流路と液溜り部を介して接続された空気孔とを備える。
