Patent ID: 7588908
Filing Date: 2009-09-15
Classification: G01N,Y10S,Y10T

Abstract:
1. A fluorescent composition for use in an assay for an analyte of interest, comprising: a particle; one or more fluorescent molecules bound to the surface of or within said particle; a biological reagent selected from the group consisting of a receptor for said analyte of interest and a ligand analogue that competes with said analyte of interest for binding to a receptor, said biological reagent directly or indirectly bound to said particle, wherein said biological reagent is selected from the group consisting of an antibody, a nucleic acid, a protein, and a peptide; and one or more protective agents comprising an antioxidant within said particle, said protective agent(s) configured and arranged to protect said biological reagent from inactivation when said particle is exposed to light and oxygen.