Patent ID: 8617369
Filing Date: 2013-12-31
Classification: G01N

Abstract:
1. A method of measuring concentration of a target analyte in a sample, the method comprising: contacting a sample of no more than 1 μL comprising the target analyte with a test strip comprising a working electrode; a counter electrode; and a redox reagent system, the redox reagent system comprising a first redox couple and a secondary redox couple, wherein the first redox couple is selected and configured to mediate the target analyte in the sample; applying a square wave excitation voltage to the test strip; measuring a response current from the test strip, wherein the response current comprises a primary peak associated with mediation of the target analyte by the first redox couple and a secondary peak from the secondary redox couple; and determining the concentration of the target analyte from the no more than 1 μL of sample based on the primary and secondary peaks.