*2.6. Quality of <sup>67</sup>Cu as Radiopharmaceutical Precursor*

According to Ph. Eur. monograph (0125) [67], a radionuclide precursor is any radionuclide produced for radiolabeling of another substance prior to administration.

In the absence of a pharmacopoeia monograph specific for <sup>67</sup>Cu, the proposed quality control protocol for produced <sup>67</sup>Cu includes identity, radioactivity, specific activity, radionuclidic purity, radiochemical purity, and chemical purity [5,6,50,63].
