Assays
First Claim
1. An immunoassay test device, comprising:
- a test strip comprising;
a porous sample receiving member, configured to receive a liquid sample, a macroporous body, a porous carrier comprising a detection zone, a first binding reagent for binding an analyte, the first binding reagent is immobilized in the detection zone, a labeled binding reagent comprising a particulate label portion and a binding portion for binding the analyte, the labeled binding reagent is disposed in the macroporous body in a dry state and is mobilizable by liquid that passes along a flow path, and the labeled binding reagent and the first binding reagent are configured to bind the analyte and to form an immobilized and directly-detectable product in the detection zone, if the analyte is present in liquid received by the sample receiving member;
wherein, the test strip defines a flow path along which liquid received by the sample receiving member can pass to the macroporous body and thereafter to the porous carrier.
6 Assignments
0 Petitions
Accused Products
Abstract
An analytical test device incorporating a dry porous carrier to which a liquid sample, eg. urine, suspected of containing an analyte such as HCG or LH can be applied indirectly, the device also incorporating a labelled specific binding reagent which is freely mobile in the porous carrier when in the moist state, and an unlabelled specific binding reagent which is permanently immobilized in a detection zone on the carrier material, the labelled and unlabelled specific binding reagents being capable of participating in either a sandwich reaction or a competition reaction in the presence of the analyte, in which prior to the application to the device of a liquid sample suspected of containing the analyte, the labelled specific binding reagent is retained in the dry state in a macroporous body, eg. of plastics material having a pore size of 10 microns or greater, through which the applied liquid sample must pass en route to the porous carrier material, the labelled specific binding reagent being freely soluble or dispersible in any liquid sample which enters the macroporous body.
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Citations
55 Claims
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1. An immunoassay test device, comprising:
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a test strip comprising;
a porous sample receiving member, configured to receive a liquid sample, a macroporous body, a porous carrier comprising a detection zone, a first binding reagent for binding an analyte, the first binding reagent is immobilized in the detection zone, a labeled binding reagent comprising a particulate label portion and a binding portion for binding the analyte, the labeled binding reagent is disposed in the macroporous body in a dry state and is mobilizable by liquid that passes along a flow path, and the labeled binding reagent and the first binding reagent are configured to bind the analyte and to form an immobilized and directly-detectable product in the detection zone, if the analyte is present in liquid received by the sample receiving member;
wherein, the test strip defines a flow path along which liquid received by the sample receiving member can pass to the macroporous body and thereafter to the porous carrier. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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41. An immunoassay test device, comprising:
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a test strip comprising;
a porous sample receiving member, configured to receive a liquid sample, a macroporous body, a porous nitrocellulose carrier comprising a detection zone, a first binding reagent capable of specifically binding a gonadotropin compound, the first binding agent is immobilized in the detection zone, a lableled binding reagent comprising a colored particulate label portion and a binding portion for the gonadotropin compound, disposed in the macroporous body in a dry state and is mobilizable by liquid that passes along a flow path, and the labeled binding reagent and the first binding reagent are configured to bind the gonadotropin compound and to form an immobilized and directly-detectable product in the detection zone, if the gonadotropin compound is present in liquid received by the sample receiving member;
wherein, the test strip defines a flow path along which liquid received by the sample receiving member can pass to the macroporous body and thereafter to the porous nitrocellulose carrier at a location separated from the detection zone. - View Dependent Claims (42, 43, 44, 45, 46, 52, 53, 54, 55)
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47. An immunoassay test device, comprising:
a test strip comprising;
a porous sample receiving member, configured to receive a liquid sample, a macroporous body, a porous carrier comprising a detection zone, and a first binding reagent for binding an analyte or an analogue thereof, a labeled reagent comprising a particulate label portion and the analyte or the analogue thereof, the labeled reagent is disposed in the macroporous body in a dry state and is mobilizable by liquid that passes along a flow path, and the labeled binding reagent and the first binding reagent are configured to form an immobilized and directly-detectable product in the detection zone, wherein, the test strip defines a flow path along which liquid received by the sample receiving member can pass to the macroporous body and thereafter to the porous carrier. - View Dependent Claims (48, 49, 50, 51)
Specification