Abstract
The purification of the iodinated tracers of CCK peptides using Sphadex G5O chromatography does not allow for a good separation between non-modified peptides and labelled peptides. We present, in this paper a simple and rapid purification method using reverse phase HPLC with a C-18 column for four of these tracers. The biological characteristics of the molecules obtained demonstrate their strong specific radioactivity and their high degree of purity.