Abstract: A object of the present invention is to provide an immunochromatography method that makes it possible to rapidly detect an ultratrace amount of an analyte that has been impossible to analyze by conventional immunochromatography methods. The present invention provides an immunochromatography method, which comprises developing an analyte and a labeling substance which is modified with a first binding substance against the analyte in a mixed state on a porous carrier and capturing the analyte and the label at a reaction site on the porous carrier having a second binding substance against the analyte or a substance capable of binding to the first binding substance against the analyte, so as to detect the analyte, wherein the labeling substance having an average particle size of 1 ?m or more and 20 ?m or less is detected.

Abstract: It is an object of the present invention to provide a method for simply mixing two or more types of liquids in a porous carrier.

Abstract: An immunochromatography kit including organic silver salt particles, a reducing agent for silver ions, and a metal colloid label or a metal sulfide label. The immunochromatography kit uses an immunoreaction of an analyte and an antibody or antigen that can bind specifically thereto, and analyzes a signal from a label derived from an immune complex.

Abstract: An immunochromatography kit including an inorganic silver salt or a silver complex, a reducing agent for silver ions, and a metal colloid label or a metal chalcogenide label. The immunochromatography kit uses an immune reaction of an analyte and an antibody or antigen that can specifically bind to the analyte, and analyzes a signal from a label derived from the immobilized immune complex.