Patent ID: 8314613

Claim:
An electrochemical biosensor, comprising: a plurality of electrodes including at least a working electrode and an auxiliary electrode prepared on at least one or two insulating plates; a sample introduction portion for introducing a sample into the electrodes; a reaction reagent layer, formed on the working electrode, containing a redox enzyme and an electron transfer mediator; an electrical connection portion for connecting the working electrode and the auxiliary electrode; and a production lot information identification portion configured such that production lot information is recorded on at least one insulating plate, which is selected from among at least two planar insulating plates and does not interrupt a connection between the electrodes, wherein the production lot information identification portion, configured such that the production lot information is recorded thereon, includes magnetization marks which display information about differences between production lots by means of differences in magnetic field intensity and are prepared by printing a magnetic material or attaching a magnetic film according to differences in magnetic field intensity in a predetermined pattern; and wherein the magnetization material or the magnetic film emits a magnetic field of 0.01˜15 Gauss.