Devices for the detection of multiple analytes in a sample
View Patent ↗The present invention relates generally to an assay for detecting and differentiating multiple analytes, if present, in a single fluid sample, including devices and methods therefore.
1. A device for the detection of multiple analytes in a fluid sample comprising: a matrix defining an axial flow path, the matrix comprising: i) a sample receiving zone at an upstream end of the flow path that receives the fluid sample; ii) a label zone, within the flow path and downstream from the sample receiving zone, comprising a first and second labeled reagent, each of which specifically bind an analyte to form a labeled analyte and are mobilizable in the presence of fluid sample; and iii) a test region comprising a first test zone, a second test zone and a control zone, wherein the control zone is positioned between the first and second test zones within the flow path, wherein each of the first and second test zones contain means which permit the detection of a different analyte in each test zone, and wherein the control zone incorporates means which allow for the indication of the completion of an assay.
2. The device of claim 1 , wherein the first zone is positioned upstream from the control zone within the flow path and the second zone is positioned downstream from the control zone within the flow path.
3. An immunoassay device for the detection of the presence or absence of each of at least two analytes in a fluid sample, the device comprising a flow path, at least two test zones and at least one control zone,
wherein the at least one control zone is positioned in the flow path upstream of at least one of the at least two test zones, and
wherein the receiving zone for said fluid sample is upstream of said test zones and said control zone.
4. The device of claim 1 , wherein said first and second labeled reagent are detectably distinguishable from one another.
5. The device of claim 1 , wherein the label component of the labeled reagent is selected from the group consisting of a chemiluminescent agent, a particulate label, a colorimetric agent, an energy transfer agent, an enzyme, a fluorescent agent and a radioisotope.
6. The device of claim 1 , wherein the labeled reagents comprise different colored particulate labeled reagents.
7. The device of claim 1 , wherein the means which permit the detection of a different analyte in each test zone comprises an immobilized capture reagent capable of specifically binding a unique labeled reagent.
8. The device of claim 1 , wherein the test region comprises nitrocellulose.
9. The device of claim 1 , wherein the test region is laminated on a plastic backing.
10. The device of claim 1 , wherein the device is capable of detecting multiple analytes selected from the group consisting of a toxin, an inorganic compound, an organic compound, a protein, a peptide, a microorganism, a bacteria, a virus, an amino acid, a nucleic acid, a carbohydrate, a hormone, a steroid, a vitamin, a drug, an antibody, and a hapten.
11. The device of claim 1 , wherein the matrix is positioned within a housing comprising a support and optionally a cover, wherein the housing contains an application aperture and one or more observation ports.
12. The device of claim 1 , wherein the test zones are capable of detecting influenza A and/or influenza B, if present, in a single sample.
13. The device of claim 1 , wherein the device comprises a dipstick assay.
14. The device of claim 3 , wherein the test zones are capable of detecting influenza A and/or influenza B, if present, in a single sample.