Reagents and method for detecting polychlorinated biphenyls
First Claim
1. A method for detecting the presence or amount of an analyte comprising polychlorinated biphenyl in a test sample, which method comprises the steps of:
- (a) adding a known concentration of a tracer labeled with a detectable moiety and a known concentration of an analyte-specific antibody to the test sample to form a mixture,wherein the tracer has the general structure of ##STR55## wherein A is a spacer group consisting of from 0 to 50 carbon atoms and heteroatoms, including not more than ten heteroatoms, arranged in a straight or branched chain, saturated or unsaturated, wherein(i) not more than two heteroatoms are linked in the sequence --NH--A--M--Fl or --O--A--M--Fl,(ii) A is not a single heteroatom, and(iii) branching occurs only on carbon atoms;
M is a linking group selected from the group consisting of ##STR56## Fl is a detectable moiety; and
wherein independently x1 =0-4 and x2 =0-5, with the proviso that together x1 and x2 ≧
1;
(b) incubating said mixture for a time and under conditions sufficient to form labeled tracer-antibody and analyte-antibody complexes; and
(c) determining the presence or amount of tracer-antibody complexesformed as a measure of the presence or amount of analyte in the test sample.
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Accused Products
Abstract
Reagents and an immunoassay for detecting the presence or amount of polychlorinated biphenyls in a test sample. The assay is performed by adding a known concentration of a tracer labeled with a detectable moiety and a known concentration of an analyte-specific antibody to a test sample to form a mixture, incubating the mixture to form labeled tracer-antibody and analyte-antibody complexes, and determining the presence or amount of tracer-antibody complexes formed as a measure of the presence or amount of analyte in the test sample. Reagents provided include tracers, immunogens and an additive compound useful in preventing non-specific binding of the polychlorinated biphenyls to proteins which may be present in the test sample. A kit for performing the assay also is provided.
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Citations
13 Claims
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1. A method for detecting the presence or amount of an analyte comprising polychlorinated biphenyl in a test sample, which method comprises the steps of:
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(a) adding a known concentration of a tracer labeled with a detectable moiety and a known concentration of an analyte-specific antibody to the test sample to form a mixture, wherein the tracer has the general structure of ##STR55## wherein A is a spacer group consisting of from 0 to 50 carbon atoms and heteroatoms, including not more than ten heteroatoms, arranged in a straight or branched chain, saturated or unsaturated, wherein (i) not more than two heteroatoms are linked in the sequence --NH--A--M--Fl or --O--A--M--Fl, (ii) A is not a single heteroatom, and (iii) branching occurs only on carbon atoms; M is a linking group selected from the group consisting of ##STR56## Fl is a detectable moiety; and
wherein independently x1 =0-4 and x2 =0-5, with the proviso that together x1 and x2 ≧
1;(b) incubating said mixture for a time and under conditions sufficient to form labeled tracer-antibody and analyte-antibody complexes; and (c) determining the presence or amount of tracer-antibody complexesformed as a measure of the presence or amount of analyte in the test sample. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A kit for detecting the presence or amount of an analyte comprising polychlorinated biphenyl in a test sample which kit comprises
a. an analyte-specific antibody; -
b. a tracer having the general structure of ##STR59## wherein A is a spacer group consisting of from 0 to 50 carbon atoms and heteroatoms, including not more than ten heteroatoms, arranged in a straight or branched chain, saturated or unsaturated, wherein (i) not more than two heteroatoms are linked in the sequence --NH--A--M--Fl or --O--A--M--Fl, (ii) A is not a single heteroatom, and (iii) branching occurs only on carbon atoms; M is a linking group selected from the group consisting of ##STR60## Fl is a detectable moiety;
independently x1 =0-4 and x2 =0-5, with the proviso that together x1 and x2 ≧
1; andc. an additive compound which prevents non-specific binding of the analyte to proteins. - View Dependent Claims (11, 12, 13)
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Specification