Simultaneous screening of multiple analytes
Methods, compositions and kits are disclosed. The methods are directed to determining the presence of one or more analytes in a sample suspected of containing any one of a plurality of the analytes. A combination is provided comprising in a medium (i) the sample, (ii) a binding partner for each of the analytes, (iii) for each of the analytes, a first reagent comprising a member of a signal producing system, a ligand and an analyte analog, and (iv) a second reagent comprising a binding partner for the ligand. The binding of the binding partner for the ligand is affected by the presence of an analyte and alters the amount of signal produced by the member of the signal producing system. The signal thus is modulated if one or more of the analytes are present in the sample. The amount of the signal is determined and is related to the presence of one or more of the analytes in the sample. The method may be homogeneous or heterogeneous.
1. A method for determining the presence of one or more analytes in a sample suspected of containing any of a plurality of said analytes, said method comprising:
(a) providing in combination in a medium (i) said sample, (ii) a binding partner for each of said analytes, (iii) for each of said analytes, a first reagent that of a conjugate comprising a member of a signal producing system, a ligand and an analyte analog, (iv) a second reagent comprising a binding partner for said ligand, wherein the binding, to said ligand, of said binding partner for said ligand alters the signal produced by said member of a signal producing system if one or more of said analytes are present in said sample, and
(b) measuring said altered signal, the amount thereof being related to the presence of one or more of said analytes in said sample.
2. A method according to claim 1 wherein said method is a homogeneous method and said medium is examined for the amount of said signal.
3. A method according to claim 1 wherein said method is a heterogeneous method and bound second reagent is separated from said medium and examined for the amount of said signal.
4. A method for determining the presence of one or more analytes in a sample suspected of containing any of a plurality of said analytes, said method comprising:
(a) providing in combination in a medium (i) said sample, (ii) a binding partner for each of said analytes, (iii) for each of said analytes, a first reagent that is conjugate comprising a member of a signal producing system, a ligand and an analyte analog, (iv) a second reagent comprising a binding partner for said ligand, wherein the binding of said second reagent to said ligand alters the amount of signal produced by said member of a signal producing system such that an increased amount of signal is produced if one or more of said analytes are present in said sample, and
(b) determining the amount of said increased amount of said signal, the amount thereof being related to the presence of one or more of said analytes in said sample.
5. A method according to claim 4 wherein said method is a homogeneous method and said medium is examined for the increased amount of said signal.
6. A method according to claim 4 wherein said method is a heterogeneous method and bound second reagent is separated from said medium and examined for the increased amount of said signal.