Patent ID: 9588113
Date: 2017-03-07
CPC Classifications: G01N,Y10T

Claim:
1. A method of detecting an analyte in a fluid sample comprising: receiving a fluid sample at an assay test device, the assay test device comprising sensors and a controller; generating a signal representative of reagent development during an assay time period; generating at least one reagent development trend signal during at least a portion of the assay time period, wherein generating at least one reagent development trend signal comprises generating a measure of consistent unidirectional change in reagent development; generating at least one endpoint signal representative of a final reagent development condition at or near the end of the assay time period; determining whether the at least one reagent development trend signal is within a pre-determined limit; determining whether the at least one endpoint signal exceeds a pre-determined threshold; and wherein the controller is configured to select a positive test result when both the at least one reagent development trend signal is within a pre-determined limit and when the at least one endpoint signal exceeds a pre-determined threshold and to select a negative test result when either the at least one reagent development trend signal is within a pre-determined limit or when the at least one endpoint signal does not exceed a pre determined threshold, and; outputting a test result selected by the controller.