| 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, at least two sensitizer reagents and at least one reactive reagent activatable by singlet oxygen. The sensitizer reagents are capable of generating singlet oxygen and are distinguishable by wavelength of sensitization. The combination of sensitizer reagents and reactive reagents allows differential detection of the components. The sensitizer reagents are differentially activated. The amount of signal generated as a result of the activation of said reactive reagent is determined wherein the amount thereof is related to the amount of each of the components in the medium. |