Pete Ellefson

Pete Ellefson is a Principal Scientist at Zoetis, where expertise in analytical chemistry is applied, specializing in LC-tandem mass spectrometry of biopharmaceuticals since February 2012. Prior to this role, Pete served as a Principal Scientist at Pfizer for nearly 11 years, focusing on tandem mass spectrometry of small molecules. Earlier in their career, Pete held the position of Sr. Biochemical Pharmacologist at 3M from 1990 to 2001, contributing to the field of biochemical pharmacology.