Patent ID: 8394325
Filing Date: 2013-03-12
Classification: G01N,Y10T

Abstract:
1. A cartridge for performing a competitive immunoassay for a sample analyte suspected of being present in a blood sample containing leukocytes, the cartridge comprising: a sample inlet for receiving the blood sample; a metering chamber for metering the blood sample to form a metered sample; one or more dry reagent coating layers within the cartridge comprising magnetic beads opsonized to leukocytes and a labeled analyte, wherein the opsonized magnetic beads are present in an amount in excess of the leukocytes in the blood sample sufficient to substantially sequester any leukocytes present in the sample; an electrode comprising an immobilized antibody to the sample analyte and to the labeled analyte; and one or more pumping elements for moving the metered sample and the labeled analyte to the electrode.