Lei Guo, PhD profile page

Dr. Lei Guo leads the protein analytical chemistry group in the CRO services department at WuXi Biologics. Her team specializes in comprehensive analytical testing of monoclonal antibodies, bispecific antibodies, antibody-drug conjugates, and fusion proteins across drug discovery and optimization. They employ mass spectrometry alongside physicochemical and biophysical analyses. With over 16 years of experience in bioanalysis, Dr. Guo has held diverse roles at Pfizer, Sanofi, and Merck, contributing to target identification, lead optimization, drug development, and CMC-stage analytical support.