Immunochemical process
First Claim
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1. A process for the determination of a polyvalent antigen which comprises:
- incubating a sample containing polyvalent antigen with three different receptors, said first and third receptors being in a liquid phase and comprising an antibody or fragment thereof, wherein said antibodies or fragments thereof derive from the same species, said second receptor being present in a solid phase, the first and third receptors specifically binding to the antigen and said second receptor specifically binding with the first receptor, said third receptor further comprising a marking and not cross-reactive with said first and second receptors;
said incubation taking place under conditions favoring formation of antigen receptor complexes, and;
separating the liquid and solid phases following complex formation, and measuring the amount of labeled receptor in either the liquid or solid phase.
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Abstract
A process for determining the presence of polyvalent antigens by incubation with three receptors is presented. In addition, a kit for carrying out this process is provided as well. One of said receptors is bound to a solid support and the other two, in solution, derive from the same animal species.
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14 Claims
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1. A process for the determination of a polyvalent antigen which comprises:
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incubating a sample containing polyvalent antigen with three different receptors, said first and third receptors being in a liquid phase and comprising an antibody or fragment thereof, wherein said antibodies or fragments thereof derive from the same species, said second receptor being present in a solid phase, the first and third receptors specifically binding to the antigen and said second receptor specifically binding with the first receptor, said third receptor further comprising a marking and not cross-reactive with said first and second receptors; said incubation taking place under conditions favoring formation of antigen receptor complexes, and; separating the liquid and solid phases following complex formation, and measuring the amount of labeled receptor in either the liquid or solid phase. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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- 13. A kit for the determination of a polyvalent antigen comprising first and third different soluble receptors which specifically bind to said antigen, said third receptor carrying a marking, and an insoluble second receptor which specifically binds to said first receptor, wherein said marked, soluble third receptor is a separate molecule identical to a part of said unmarked soluble first receptor and is derived from the same animal species as said first receptor, wherein said three receptors are present in amounts sufficient to determine the polyvalent antigen.
Specification