Patent ID: 8394646

Claim:
A method for quality testing/control of radioactive species, wherein said species comprises macromolecules or chemical compounds; said species being either inherently radioactive or labeled with a radioactive nuclide; said species being used in diagnostic or therapeutic procedures, the method comprising: providing a model system for the diagnostic or therapeutic system in which the species is to be used, said model system interacting with said species to form species-model complexes; immobilizing the model system on a solid support; providing a solution of the species of interest; bringing said solution in contact with the model system immobilized on the support, detecting a presence of interaction between the species in solution and the model system on a solid support and rate of formation of species-model complexes by a radioactivity detector; and rejecting said species for use in a diagnostic or therapeutic procedure if the detected presence of interaction between the species and the model system and the rate of formation of species-model complexes have values deviating from predefined acceptable ranges.