BIOSENSOR, MEASURING DEVICE FOR THE SAME AND QUANTIFICATION METHOD FOR SUBSTRATE

PROBLEM TO BE SOLVED: To solve the difficulty in accurate measurement caused by the problem that a sample liquid is accidentally supplied from an exhaust port not from a sample supply port of a biosensor. SOLUTION: When the biosensor is inserted into a supporting part of a measuring device, a voltage is applied to a first electrode set on the upstream side near the sample supply port and a second electrode set on the exhaust port side among a plurality of electrodes by a drive power source. Whether the amount of the sample liquid is shorter than that required for measurement is determined based on whether currents output from the first electrode set and the second electrode set exceed a predetermined threshold value, whereas it is determined that the sample liquid is accidentally sucked from the exhaust port when the current from the second electrode set exceeds the predetermined threshold value before the first electrode set and the current from the first set does not exceed the predetermined threshold value within a predetermined lapse time. COPYRIGHT: (C)2010,JPO&INPIT