Patent ID: 6576101
Filing Date: 2003-06-10
Classification: A61B,C12Q,G01N

Abstract:
A disposable electrochemical sensor strip for determining the concentration of an analyte in a blood sample, the sensor comprising:first and second inert bases, each formed in a generally rectangular shape and positioned relative to one another in a substantially overlapping manner, wherein, as positioned, the sensor bases define between them, side and end edges of the sensor, and between which bases are disposed: a working electrode; a reference electrode; and a sample chamber for receiving and holding the sample, which sample chamber extends to an edge of the sensor and forms an opening therein between the bases, and for holding the sample in electrolytic contact with the working electrode and the reference electrode; wherein (i) a polymeric redox mediator cross-linked with an enzyme is non-leachably disposed on the working electrode; and (iii) the sample chamber is sized to contain a volume of less than about 1 &mgr;l of sample.