Patent ID: 9157911
Filing Date: 2015-10-13
Classification: B82Y,C01B,C01P,G01N

Abstract:
1. A method of assaying an analyte in a sample in which magnetic silica particles are used, wherein the magnetic silica particles comprise silica particles containing 60 to 95% by weight of a superparamagnetic metal oxide that has an average particle size of 1 to 15 nm; and an analyte-binding substance that is a substance capable of specifically binding to the analyte and is immobilized on a surface of the silica particles, and wherein the method comprises: bringing a sample containing the analyte, the magnetic silica particles, and a labeled analyte-binding substance that is an analyte-binding substance labeled by a label into contact with each other to form a labeled complex that is a complex of the analyte-binding substance, the analyte, and the labeled analyte-binding substance on the magnetic silica particles; B/F-separating the magnetic silica particles carrying the labeled complex; measuring the amount of the label in the labeled complex; and assaying the analyte in the sample based on the resulting amount of the label.