Patent ID: 7819161

Claim:
A method for making a plurality of test strips, comprising: forming an array of test strip structures on a first insulating sheet, each of the test strip structures including: a first conductive pattern disposed on the first insulating sheet, the first conductive pattern forming at least four electrodes including a working electrode, a counter electrode, a fill-detect cathode, and a fill-detect anode, a second conductive pattern disposed on the first insulating sheet spaced from the first conductive pattern, the second conductive pattern including a plurality of spaced electrical contacts, and a plurality of conductive traces disposed on the first insulating sheet for electrically connecting the first and second conductive patterns, attaching a second insulating sheet to the first insulating sheet, the second insulating sheet formed to include a slot defining a sample chamber in the test strip, the slot including a proximal end and a distal end; attaching a cover layer to the second insulating sheet with an adhesive layer, the adhesive layer including the break, the break extending from the distal end of the slot to an opening for venting the sample chamber, and the cover layer overlying the slot and the break; and separating the plurality of test strip structures into the plurality of test strips.