Enzyme immunoassay with two-zoned device having bound antigens
First Claim
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1. A device for determining the presence of antigens which comprises:
- a matrix;
a first zone in said matrix containing (a) bound and immobilized antigens and (b) enzyme-linked antibodies which are capable of immunologically reacting with said antigens, said antibodies being positioned in said first zone such that they will be removed from said first zone when reacted with antigens passing through said first zone but not removed from said first zone in the absence of such antigens; and
a second zone removed from said first zone containing material capable of reacting with said enzyme-linked antibodies to produce a color forming reaction which indicates the presence of said antibodies.
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Abstract
A device for determining the presence of antigens which comprises a first zone containing antigens and enzyme-linked antibodies which are capable of immunologically reacting with said antigens, said antibodies being positioned in said first zone such that they will be removed from said first zone when reacted with antigens passing through said first zone but not removed from said first zone in the absence of such antigens, and a second zone containing material capable of reacting with said enzyme-linked antibodies to produce a color forming reaction which indicates the presence of said antibodies.
269 Citations
23 Claims
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1. A device for determining the presence of antigens which comprises:
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a matrix; a first zone in said matrix containing (a) bound and immobilized antigens and (b) enzyme-linked antibodies which are capable of immunologically reacting with said antigens, said antibodies being positioned in said first zone such that they will be removed from said first zone when reacted with antigens passing through said first zone but not removed from said first zone in the absence of such antigens; and a second zone removed from said first zone containing material capable of reacting with said enzyme-linked antibodies to produce a color forming reaction which indicates the presence of said antibodies. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for determining the presence of antigens in a biological fluid which comprises:
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bringing a fluid which is to be tested for the presence of antigens into contact with a device having a matrix including a first zone containing (a) bound and immobilized antigens and (b) enzyme-linked antibodies which are capable of immunologically reacting with said antigens, said antibodies being positioned in said first zone such that they will be removed from said first zone but not removed from said first zone in the absence of such antigens, and a second zone removed from said first zone containing material capable of reacting with said enzyme-linked antibodies to produce a color forming reaction which indicates the presence of said antibodies; allowing said fluid to permeate said device; and observing the presence or absence of any color change in said second zone to thereby determine the presence or absence of the tested for antigen in said fluid. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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22. A device for determining the presence of antibodies which comprises:
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a matrix; a first zone is said matrix containing enzyme-linked antigens and bound and immobilized antibodies which are capable of immunologically reacting with said enzyme-linked antigens, said enzyme-linked antigens being positioned in said first zone such that they will be removed from said first zone but not removed from said first zone in the absence of such antibodies; and a second zone removed from said first zone containing material capable of reacting with said enzyme-linked antigens to produce a color forming reaction which indicates the presence of said antigens.
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23. A method for determining the presence of antibodies in a biological fluid which comprises:
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bringing a fluid which is to be tested for the presence of antibodies into contact with a device having a matrix including a first zone containing enzyme-linked antigens and bound and immobilized antibodies which are capable of immunologically reacting with said enzyme-linked antigens, said enzyme-linked antigens being positioned in said first zone such that they will be removed from said first zone when reacted with antibodies passing through said first zone but not removed from said first zone in the absence of such antibodies, and a second zone removed from said first zone containing material capable of reacting with said enzyme-linked antigens to produce a color forming reaction which indicates the presence of said antigens; allowing said fluid to permeate said device; and
,observing the presence of absence of any color change in said second zone to thereby determine the presence or absence of the tested for antibodies in said fluid.
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Specification