Patent ID: 7144485

Claim:
A strip for analyzing a sample comprising: a first insulating layer; a second insulating layer; a spacer layer disposed between the first and second insulating layers, and configured to define, together with the first and second insulating layers, an adsorption port, a sample chamber, and a capillary for delivering a sample from the adsorption port to the sample chamber; wherein the adsorption port is outwardly enlarged from the capillary and only one of the first and second insulating layers has an indentation at the adsorption port, which is defined by the indentation, the other insulating layer, and the spacer layer; and a conducting circuit also disposed between the first and second insulating layers; the conducting circuit having a working electrode, a counter electrode and connectors; at least a portion of the working electrode and the counter electrode being in association with a test agent reactive to an analyte and placed in the sample chamber; the connector being electrically connected to the working electrode and the counter electrode, and being adapted for electrical connection to a meter capable of measuring an electrical parameter; wherein the sample chamber is filled with a hydrophilic material, the strip is a rectangle and has a side edge and a rear edge, the adsorption port being disposed at the side edge, and the connectors being disposed at the rear edge; whereby an analyte-responsive signal is generated and transmitted to the meter when a sample containing the analyte enters the sample chamber and contacts both the working electrode and the counter electrode.