Patent ID: 7897033

Claim:
A method of measuring sample reaction results on a biosensor having a checking electrode, a working electrode and a counter electrode, comprising: applying voltage between the checking and working electrodes; injecting sample into a sample receiving region; measuring first current between checking and working electrodes; applying voltage between the working and counter electrodes; measuring second current between the working and counter electrodes; measuring a time interval from a time at which the first current begins to be detected to a time at which the second current begins to be detected; comparing the first and second currents with a predetermined threshold current value and the time interval with a predetermined time value; if the first and second currents are greater than the predetermined threshold current value and the time interval is less than the predetermined time value, re-applying voltage between the working and counter electrodes, and then measuring third current between the working and counter electrodes; and computing a concentration value corresponding to the third current as the sample reaction results.