| abstract |
PROBLEM TO BE SOLVED: To provide a cholesterol sensor in which plasma obtained by filtration of blood quickly reaches an electrode system and has high accuracy and excellent responsiveness. SOLUTION: An insulating substrate, an electrode system, a reaction layer containing a reagent, a sample liquid supply path including the electrode system and the reaction layer, a sample liquid supply section, and a sample liquid supply path and a sample liquid supply section In a biosensor including a filter provided therebetween, a direction in which the sample liquid passes through the filter is set to a vertical direction without allowing the filter to enter the sample liquid supply path, and the plasma is supplied to the sample liquid supply path. It is designed so that the direction passing from the opening of the road toward the air hole is horizontal. |