Patent ID: 9233370
Filing Date: 2016-01-12
CPC Classification: B01L,G01N

Claim Text:
1. A microfabricated magnetic layer on a substantially planar surface, wherein the microfabricated magnetic layer comprises: high-field permanent magnetic particulates dispersed in a thermally, chemically or photoformably cured immobilization matrix; wherein the immobilization matrix comprises a polyimide, polyvinyl alcohol, or epoxy resin; wherein the microfabricated magnetic layer is positioned substantially proximate to a microfabricated sensing electrode, wherein the electrode is connected by a conductive line to instrument electronics, wherein the microfabricated magnetic layer is not the conductive line, wherein the microfabricated magnetic layer is positioned to attract magnetically susceptible beads coated with a capture antibody to a target analyte, wherein the electrode is an amperometric electrode, and wherein the magnetic layer is configured to concentrate the magnetically susceptible beads with the capture antibody and the target analyte within a sample fluid at the electrode for measurement, and wherein the amperometric electrode is configured to detect the target analyte.