Ascensia Diabetes Care Holdings Ag

Bayer Healthcare LLC

Jing Lin

Huan-Ping Wu

Henry C Arndt

Fu Hsiung Tsai

Nicole D Ellis

Jun Chen

Raymond L Yao

Jacob Schieffelin Brauer

Jennifer Marie Levin

Harris Lieber

Darren Brown

Richard Kates

Amy Schwartz

Kevin Chang

Fred Sommer

A method of distinguishing a control solution from a sample in an electrochemical test sensor is performed. The method includes adding a control marker to the control solution. The control solution includes the control marker and analyte. The test sensor includes working and counter electrodes, and a reagent. A potential is applied to the test sensor to oxidize the control marker and the analyte. The resulting electrical current is measured. A potential is applied to the test sensor lower than the other potential in which the potential is sufficient to oxidize the analyte and not the control marker. The resulting electrical current is measured. Determining whether a control solution or a sample is present based on the measured electrical currents. To increase the measured current, a salt may be added to the control solution in an amount sufficient to increase the electrical current by at least 5% as compared to a control solution in the absence of a salt.

Method of using an electrochemical test sensor

An electrochemical test sensor is adapted to measure glucose and correct for the oxygen effect in a fluid sample. The test sensor comprises a base, first and second working electrodes, and a counter electrode. The first working electrode includes glucose oxidase, a mediator and peroxidase. The second working electrode includes glucose oxidase and the mediator. The first working electrode, the second working electrode and the counter electrode are located on the base. In other embodiments, an electrochemical test sensor is adapted to measure cholesterol, lactate, pyruvate or xanthine and correct for the oxygen effect in a fluid sample.

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Belmont, MA, United States of America

Jing Lin