Non-instrumented assay with quantitative and qualitative results
First Claim
1. A process for assaying for an analyte in a sample, said process comprising:
- providing a solid support having at least two lanes wherein each lane has a contact zone for applying sample to each lane and further wherein the first lane of the solid support has binder immobilized on the entire length of the first lane of the solid support, said binder being a binder for at least the analyte, and the second lane of the solid support is juxtaposed to the first lane of the solid support, and said second lane has binder immobilized on the entire length of said second lane of the solid support, said binder being a binder for at least the analyte, and a known amount of said analyte is immobilized on said binder which is immobilized on the entire length of the second lane of the solid support;
contacting the contact zone of the first lane with sample and tracer wherein said tracer is comprised of a ligand labeled with a visible label;
contacting the contact zone of the second lane with tracer; and
determining the visibility of tracer bound in the first and second lanes of binder as a measure of analyte in the sample.
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Accused Products
Abstract
The invention is directed to a non-instrumented assay giving quantitative and/or qualitative results. Specifically, the invention is directed to an assaying process wherein a first portion of binder supported on substantially the entire length of a solid is contacted with a sample suspected of containing analyte. The binder is a binder for at least the analyte. The first portion is also contacted with a tracer. The process includes contacting a second binder portion also supported on the solid with tracer. The second portion is juxtaposed to the first portion and has a known amount of analyte thereon. The amount of analyte in the sample is determined by comparing the visibility of tracer in the first and second portions. In a preferred embodiment, a third binder portion supported on the solid juxtaposed to the second portion is contacted with tracer. The third portion has a known amount of analyte thereon. The amount of analyte in the third portion is different from the amount on the second portion. According to another aspect, the invention is also directed to a kit for performing the above-described process.
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Citations
29 Claims
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1. A process for assaying for an analyte in a sample, said process comprising:
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providing a solid support having at least two lanes wherein each lane has a contact zone for applying sample to each lane and further wherein the first lane of the solid support has binder immobilized on the entire length of the first lane of the solid support, said binder being a binder for at least the analyte, and the second lane of the solid support is juxtaposed to the first lane of the solid support, and said second lane has binder immobilized on the entire length of said second lane of the solid support, said binder being a binder for at least the analyte, and a known amount of said analyte is immobilized on said binder which is immobilized on the entire length of the second lane of the solid support; contacting the contact zone of the first lane with sample and tracer wherein said tracer is comprised of a ligand labeled with a visible label; contacting the contact zone of the second lane with tracer; and determining the visibility of tracer bound in the first and second lanes of binder as a measure of analyte in the sample. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A kit for assaying for an analyte in a sample comprising:
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a solid support having at least two lanes wherein each lane has a contact zone for applying sample to each lane and further wherein the first lane of the solid support has binder immobilized on the entire length of said lane of the solid support, and the second lane of the solid support is juxtaposed to the first lane of the solid support, and said second lane has binder immobilized on the entire length of said second lane of the solid support and a known amount of analyte is immobilized on said binder which is immobilized on the entire length of the second lane of the solid support; binder, said binder being a binder for at least the analyte; a tracer comprised of a ligand labeled with a visible label, wherein said tracer together with sample is contacted to the contact zone of the first lane or portion and wherein tracer is contacted to the contact zone of the second lane or portion after sample has been added thereon; and further, said binder being supported in a concentration whereby bound tracer is visible on the support under assay conditions. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29)
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Specification