An Industry-Leading Clinical and Preclinical CRO With a Solid Reputation

MicroConstants is a GLP-compliant clinical and preclinical CRO (Contract Research Organization) focused on performing regulated bioanalysis, drug metabolism, and pharmacokinetic analysis in support of discovery, preclinical, and clinical drug development studies. We provide highly specialized services in method development, validation, and sample analysis for small molecules, macromolecules, biomarkers, and metabolites, using LC/MS/MS, HPLC/UV, immunoassay, multiplex, and qPCR techniques. We also assemble and distribute protocol-specific specimen collection kits to streamline and simplify the PK collection process for single and multi-site clinical trials.

Our Story

MicroConstants, Inc. was founded in 1998 in San Diego, California, by Gilbert Lam, Ph.D., a veteran in pharmaceutical development and a scientist trained in the field of pharmacokinetics. Our San Diego facility has since grown to become one of the largest bioanalytical LC/MS/MS laboratories in the U.S., housing 25 LC/MS/MS systems and occupying 34,000 square feet of office and laboratory space.

In 2007, MicroConstants expanded its operations internationally, when Dr. Lam co-founded MicroConstants China, Inc. in Beijing, China. The second facility was established to meet the growing demand of pharmaceutical development being outsourced to Asia. MicroConstants China adopted MicroConstants’ quality systems and has been GLP-compliant since April 2009. All key personnel participate in extensive cross-Pacific training.

MicroConstants by the Numbers

The numbers are clear: MicroConstants is a highly reputable, experienced partner for regulated
bioanalysis studies.

100% program approval rate by USFDA


regulatory complaints
over 4 FDA audits



regulated studies



years experience



of company resources
dedicated to lab



methods developed



validated assays