Method for quantitative analysis of thyroid hormone
申请人:Fuji Photo Film Co., Ltd.
公开号:US04771008A1
公开(公告)日:1988-09-13
A method for quantitative analysis of low molecular weight components which are contained in a protein-containing liquid sample originating from body fluids and are capable of binding to said protein, characterized by incorporating into the liquid sample a compound having the formula (I): X--(Y).sub.p --SO.sub.3 M (I) in which M is hydrogen ion, an alkali metal ion, or ammonium ion; X is a straight or branched alkyl, alkenyl, fluorinated alkyl, or fluorinated alkenyl group containing at least 6 carbon atoms, Y is a divilent organic residue; and p is 0 r 1. The compound represented by formula (I) liberates thyroid hormone from bound protein to facilitate analysis.
Fluorescent labels having a polysaccharide bound to polymeric particles
申请人:Eastman Kodak Company
公开号:US04801504A1
公开(公告)日:1989-01-31
Fluorescent labels comprise a polysaccharide bound to a polymeric particle which contains a fluorescent rare earth chelate. These labels can be attached to any of a variety of physiologically reactive species to provide labeled species which have improved stability in aqueous solutions. The labeled species are particularly useful in specific binding assays to determine an immunologically reactive ligand, e.g. a hapten, in either solution or dry analytical techniques.
Multi-layer analysis element utilizing specific binding reaction
申请人:Fuji Photo Film Co., Ltd.
公开号:US04587102A1
公开(公告)日:1986-05-06
A dry type multilayer analysis element for assaying a concentration of a specific component utilizing a competitive immunological reaction comprises a detection element comprising a detection layer which receives a labelled complex formed as a result of the competitive immunological reaction or an optically detectable change formed dependent upon an amount of the labelled complex of the specific component and having further provided thereon the detection layer a reaction layer comprising a fibrous porous medium containing fine particles therein. The multilayer analysis element absorbs an amount of a sample solution necessary for the competitive immunological reaction so that the multilayer analysis element has high sensitivity and high reproducibility.
A multilayer analytical element for fluorometric assay of an analyte contained in an aqueous sample liquid, utilizing a competitive binding reaction to a protein between the analyte and a fluorescent-labelled analyte substance or analogue thereof, which comprises:
a porous fibrous or non-fibrous spreading sheet containing a predetermined amount of the fluorescent-labelled analyte substance or analogue thereof;
a porous sharing sheet enabling substantial separation of a bound fluorescent-labelled complex (B) of the protein from the free fluorescent-labelled analyte substance or analogue thereof (F); and
a reaction sheet containing a predetermined amount of the protein specifically bindable to the analyte fixed therein;
being under laminated structure in this order.
A slide enclosing the multilayer analytical element and a fluorometric assay employing the multilayer analytical element are also disclosed.
Method for quantitative analysis of low molecular weight components contained in protein-containing liquid sample
申请人:FUJI PHOTO FILM CO., LTD.
公开号:EP0100543A1
公开(公告)日:1984-02-15
A method for quantitative analysis of low molecular weight components which are contained in a protein-containing liquid sample originating from body fluids and are capable of binding to said protein, characterized by incorporating into the liquid sample a compound having the formula (I):
In which M is hydrogen ion, an alkali metal ion, or ammonium ion; X is a straight or branched alkyl, alkanyl, fluorinated alkyl, or fluorinated alkenyl group containing at least 6 carbon atoms, Y is a divalent organic residue: and p is 0 or 1.