Patent ID: 8287810
Filing Date: 2012-10-16
Classification: C12Q,G01N,Y10T

Abstract:
1. A test kit which comprises: (a) a biosensor device for detecting an analyte, the biosensor device comprising a strip of a substrate having at least two zones, wherein: (b) a nanoparticle composition which is ferromagnetic particles bound to a conductive polymer bound to a second capture reagent for the analyte, wherein the weight ratio of conductive polymer to ferromagnetic particles in the nanoparticle composition ranges from 0.6 to 0.8; wherein when a fluid sample comprising a complex comprising the analyte bound to the second capture reagent of the nanoparticle composition is provided in the second of the zones, the complex migrates to the first zone in the fluid transfer medium and the analyte is bound by the first capture reagent thereby altering a conductivity or resistance of the defined area in the first zone as measured between the electrodes to detect the analyte.