Patent application number | Description | Published |
20100248273 | AMELIORATION OF HETEROPHILE ANTIBODY IMMUNOSENSOR INTERFERENCE - The invention is directed to methods and devices for reducing interference from heterophile antibodies in an analyte immunoassay. In one embodiment, the invention is to a method comprising the steps of (a) amending a biological sample such as a whole blood sample with non-human IgM or fragments thereof by dissolving into said sample a dry reagent to yield a non-human IgM concentration of at least about 20 μg/mL or equivalent fragment concentration; and (b) performing an electrochemical immunoassay on the amended sample to determine the concentration of said analyte in said sample. Preferably, the sample is amended with IgG or fragments thereof in addition to the IgM of fragments thereof. | 09-30-2010 |
20110117580 | REDUCING LEUKOCYTE INTERFERENCE IN NON-COMPETITIVE IMMUNOASSAYS - The invention is directed to methods and devices for reducing interference from leukocytes in an analyte immunoassay, and in particular in non-competitive immunoassays. In one embodiment, the invention is to a method comprising the steps of (a) amending a biological sample such as a whole blood sample with sacrificial beads; and (b) performing a non-competitive immunoassay on the amended sample to determine the concentration of said analyte in said sample. Preferably, the sample is amended with IgG-coated sacrificial beads. | 05-19-2011 |
20110117581 | REDUCING LEUKOCYTE INTERFERENCE IN COMPETITIVE IMMUNOASSAYS - The invention is directed to methods and devices for reducing interference from leukocytes in an competitive analyte immunoassays. In one embodiment, the invention is to a method comprising the steps of (a) amending a biological sample such as a whole blood sample with sacrificial beads opsonized for leukocytes; and (b) performing a competitive immunoassay on the amended sample to determine the concentration of said analyte in said sample. Preferably, the sample is amended with IgG-coated sacrificial beads. | 05-19-2011 |
20110269159 | REAGENTS FOR REDUCING LEUKOCYTE INTERFERENCE IN IMMUNOASSAYS - Methods and devices for reducing interference from leukocytes in an analyte immunoassay are provided. In one embodiment, a method is provided comprising the steps of amending a biological sample such as a whole blood sample with one or more leukocidal reagents that reduce or eliminate the metabolic activity of leukocytes, and performing an immunoassay on the amended sample to determine the concentration of analyte in the sample. Preferably, the sample is amended with one or more enzymes and optionally one or more enzyme substrates and cofactors. | 11-03-2011 |
20110306070 | MAGNETIC BEADS FOR REDUCING LEUKOCYTE INTERFERENCE IN IMMUNOASSAYS - Methods and devices for reducing interference from leukocytes in an analyte immunoassay are provided. In one embodiment, a method is provided comprising the steps of amending a biological sample with magnetic sacrificial beads opsonized to leukocytes, binding leukocytes in the sample to the magnetic sacrificial beads, and magnetically retaining the beads out of contact from an immuno sensor. | 12-15-2011 |
20120034624 | OSCILLATING IMMUNOASSAY METHOD AND DEVICE - The present invention provides apparatus and methods for the rapid determination of analytes in liquid samples by immunoassays incorporating magnetic capture of beads on a sensor capable of being used in the point-of-care diagnostic field. | 02-09-2012 |
20120034684 | MAGNETIC IMMUNOSENSOR WITH TRENCH CONFIGURATION AND METHOD OF USE - The present invention provides apparatus and methods for the rapid determination of analytes in liquid samples by immunoassays incorporating magnetic capture of beads on a sensor capable of being used in the point-of-care diagnostic field. | 02-09-2012 |
20120073969 | Amelioration of Heterophile Antibody Immunosensor Interference - The invention is directed to methods and devices for reducing interference from heterophile antibodies in an analyte immunoassay. In one embodiment, the invention is to a method comprising the steps of (a) amending a biological sample such as a whole blood sample with non-human IgM or fragments thereof by dissolving into said sample a dry reagent to yield a non-human IgM concentration of at least about 20 μg/mL or equivalent fragment concentration; and (b) performing an electrochemical immunoassay on the amended sample to determine the concentration of said analyte in said sample. Preferably, the sample is amended with IgG or fragments thereof in addition to the IgM of fragments thereof. | 03-29-2012 |
20120295290 | MAGNETIC BEADS FOR REDUCING LEUKOCYTE INTERFERENCE IN IMMUNOASSAYS - Methods and devices for reducing interference from leukocytes in an analyte immunoassay are provided. In one embodiment, a method is provided comprising the steps of amending a biological sample with magnetic sacrificial beads opsonized to leukocytes, binding leukocytes in the sample to the magnetic sacrificial beads, and magnetically retaining the beads out of contact from an immunosensor. | 11-22-2012 |
20130273576 | REAGENTS FOR REDUCING LEUKOCYTE INTERFERENCE IN IMMUNOASSAYS - Methods and devices for reducing interference from leukocytes in an analyte immunoassay are provided. In one embodiment, a method is provided comprising the steps of amending a biological sample such as a whole blood sample with one or more leukocidal reagents that reduce or eliminate the metabolic activity of leukocytes, and performing an immunoassay on the amended sample to determine the concentration of analyte in the sample. Preferably, the sample is amended with one or more enzymes and optionally one or more enzyme substrates and cofactors. | 10-17-2013 |