Brett Holmquist, PhD, DABCC, FAACC

Discipline Director, Endocrinology, Labcorp

Dr. Holmquist earned his PhD in interdisciplinary life sciences from the University of California. He is board-certified in clinical chemistry and holds laboratory director qualifications in California and New York. He serves as a member of the American Association of Clinical Chemistry (AACC), the Endocrine Society, the American Society for Mass Spectrometry (ASMS), Clinical Laboratory Standards Institute (CLSI) and is a founder of the Los Angeles Metropolitan Mass Spectrometry Group (LAMMS).

In addition to his role as a discipline director for endocrinology, Dr. Holmquist also specializes in clinical trials/diagnostics, esoteric immunoassay, mass spectrometry, and routine and special chemistry.


  1. Development and validation of a liquid chromatography tandem mass spectometry bioanalytical method for the 11-oxygenated androgens 11-ketotestosterone, 11-hydrotestosterone and 11-hydroxyandrostenedione in serum or plasma