Nicole A Ellis

US Patent:

20180180565, Jun 28, 2018

Filed:

Feb 23, 2018

Appl. No.:

15/903902

Inventors:

- Basel, CH
Fu Hsiung Tsai - San Diego CA, US
Huan-Ping Wu - Granger IN, US
Nicole D. Ellis - Mishawaka IN, US
Henry C. Arndt - Elkhart IN, US

International Classification:

G01N 27/26
G01N 27/327
G01N 33/96
G01N 33/66
C12Q 1/00

Abstract:

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.

US Patent:

20150008143, Jan 8, 2015

Filed:

Sep 19, 2014

Appl. No.:

14/491272

Inventors:

- Whippany NJ, US
Fu Hsiung Tsai - San Diego CA, US
Huan-Ping Wu - Granger IN, US
Nicole D. Ellis - Mishawaka IN, US
Henry C. Arndt - Elkhart IN, US

International Classification:

G01N 27/26
G01N 27/327

US Classification:

2057775, 205775

Abstract:

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.