[Analysis of the polypeptide profile in insulin preparations using HPLC]

The purity of insulin preparations which is important during clinical administration of this hormone can be assessed in several ways. The authors suggested and tested a method for analysis of the polypeptide composition of insulin preparations which makes quantitative and qualitative evaluation of the insulin and non-insulin character possible, as well as their separation according to the shape and size of biological macromolecules by gel filtration on HPLC equipment. The described procedure makes possible a more detailed analysis of insulin preparations when the method is used in combination with electromigration and immunological estimations.