(a)
(b)
Figure 3: Radioanalytical HPLC chromatogram of 68Ga-DOTA-TBIA101 (a) before and (b) after successful C18 Sep-pak cartridge purification. Reg. number 3 confirmed the elution of 68Ga-DOTA-TBIA101 including traces of unbound 68Ga (Reg. number 1) and by-products (Reg. number 2, number 4, and number 5) which were successfully removed (b).