Fig. 1From: An investigation of aspects of radiochemical purity of 99mTc-labelled human serum albumin nanocolloidSolid-phase extraction of NanoHSA using Sep-Pak® cartridge. Colloidal [99mTc]TcO2 and [99mTc]Tc-NanoHSA were retained on Sep-Pak® cartridge enabling further TLC analysis of soluble hydrophilic impurities in fraction ABack to article page