top of this through hole is covered with the cover thereby forming a lancing portion the remaining portion of the space 107 of the spacer 106 serves as a channel 112 furthermore as shown in fig2 a reagent layer 104 is disposed on the working electrode 102 and the counter electrode 103 thereby forming an analysis portion in the present invention the material for the insulating substrate is not particularly limited and may be for example polyethylene terephthalate pet polycarbonate pc polyimide pi polyethylene pe polypropylene pp polystyrene ps polyvinyl chloride pvc polyoxymethylene pom monomer cast nylon mc polybutylene terephthalate pbt polymethyl methacrylate pmma an abs resin abs or glass among them polyethylene terephthalate pet polycarbonate pc and polyimide pi are preferable and polyethylene terephthalate pet is more preferable the size of the insulating substrate is not particularly limited for example the insulating substrate may have an overall length of 5 mm to 100 mm a width of 3 mm to 50 mm and a thickness of 0 1 mm to 2 mm preferably an overall length of 10 mm to 50 mm a width of 3 mm to 20 mm and a thickness of 0 2 mm to 1 mm and more preferably an overall length of 15 mm to 30 mm a width of 5 mm to 10 mm and a thickness of 0 3 mm to 0 6 mm in the insulating substrate the through hole may be formed for instance by perforating the insulating substrate.