Labeling targeting agents with gallium-68 and gallium-67

Drug – bio-affecting and body treating compositions – In vivo diagnosis or in vivo testing – X-ray contrast imaging agent

Reexamination Certificate

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C424S001110, C424S001490, C424S001650, C424S001690, C424S009100

Reexamination Certificate

active

07011816

ABSTRACT:
A method and compositions are described for labeling a targeting agent with Ga-68, in which eluate from an acid-eluted Ge-68/Ga-68 generator is combined with a macrocycle-containing targetable agent. The labeling method and compositions disclosed ensure that a simple elution of gallium-68, taken directly from a generator, can be used without further manipulation to quantitatively label a macrocycle-containing targetable agent. The Ga-68 labeled targeting agent so produced is useful with specific targeting agents, and is most especially useful in a pretargeting method for positron emission tomographic detection.

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