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 method for the detection of multiple nucleic acid analytes in a fluid sample, the method comprising:
contacting a device with a fluid sample suspected of comprising one or more nucleic acid analytes of interest, each nucleic acid analyte of interest bound to a haptenic complementary nucleotide sequence, the fluid sample comprising a labeled control reagent, the device comprising a matrix defining an axial flow path, the matrix comprising:
i) a sample receiving zone at an upstream end of the axial flow path that receives the fluid sample,
ii) a label zone positioned within the axial flow path and downstream from the sample receiving zone, said label zone comprising a mobilizable signal producing component that binds each nucleic acid analyte of interest bound to its haptenic complementary nucleotide sequence,
iii) at least two test zones positioned within the axial flow path and downstream from the label zone, wherein each test zone comprises a restraining component that restrains each nucleic acid analyte of interest bound to its haptenic complementary nucleotide sequence, and
iv) a control zone positioned within the axial flow path and downstream from the label zone, the control zone comprising an immobilized member of a specific binding pair that binds with the labeled control reagent; and
inspecting the at least two test zones for signal producing component captured by the restraining component at each of the at least two test zones, where presence of the signal producing component at a test zone indicates presence of the nucleic acid analyte of interest bound to its haptenic complementary nucleotide sequence.
2. The method of claim 1 , wherein the mobilizable signal producing component 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.
3. The method of claim 1 , wherein the mobilizable signal producing component is a colored particulate label.
4. The method of claim 1 , wherein the label zone comprises a mobilizable signal producing component comprised of different colored particulate labeled reagents.
5. The method of claim 1 , wherein the mobilizable signal producing component is a fluorescent agent.
6. The method of claim 1 , wherein the restraining component in one test zone of said at least two test zones is an antibody that binds a nucleic acid analyte of interest bound to a haptenic complementary nucleotide sequence.
7. The method of claim 1 , wherein the immobilized member in the control zone comprises an antibody.
8. The method of claim 7 , wherein the antibody in the control zone is specific for a labeled control reagent.
9. The method of claim 1 , wherein the nucleic acid analyte of interest is associated with a sexually transmitted disease.
10. The method of claim 9 , wherein the nucleic acid analytes of interest are for detection of herpes.
11. The method of claim 10 , wherein the device is in the form of a dipstick assay device.