Characterizing protein impurities is a key requirement of ICH Q6B.


We can search for:

  • Product-related impurities

which are basically types of protein modification. Examples are deamidation or oxidation. We analyze these with a combination of 2D gel electrophoresis, high performance liquid chromatography (HPLC) and peptide mapping.

  • Process-related impurities,

such as host cell proteins, which we can detect using ELISA, 2D gel electrophoresis, western blotting or mass spectrometry.


Your contact for Process- and Product-Related Impurities at Protagen Protein Services GmbH

Thomas Flad

Dr. Thomas Flad

Director Business Development
Our business development team will be happy to assist you with your project.

Phone: +49 (0) 231 9742-6100