Methods to increase dynamic range and improve quantitative analysis in rapid biosensors

摘要

Conductimetric assay devices that have both low end and high end sensitivity are described. The geometric shape and/or arrangement of the capture zones make it possible for the assay devices to have both low end and high end sensitivity. Also described is a conductimetric assay device having a pre-capture zone to capture unbound analyte. The assay device overcomes the problem of flooding by the analyte.