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Abstract

Methods, compositions and kits are disclosed. The methods are directed to determining the presence or relative amounts of two or more components in a medium. A combination is provided comprising a medium suspected of containing the components and a label reagent for each of the components. The label reagent comprises a chemiluminescent composition that is activated by electromagnetic radiation. A first specific binding pair (sbp) member may be associated with the reagent depending on the components to be determined. Luminescence emitted by each of the chemiluminescent compositions upon activation is differentially detectable. Where a first sbp member is employed, it is capable of binding to the component or to a second sbp member to form a complex related to the amount of the component. At least one of the chemiluminescent compositions comprises a fluorescent energy acceptor. After the above are combined, the chemiluminescent compositions are activated. The amount of luminescence generated by each of the chemiluminescent compositions is detected and related to the amount of each of the components in the medium.

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First Claim