QPS is a GLP/GCP-compliant contract research organization (CRO) supporting discovery, preclinical and clinical drug development.
Last updated September 10, 2026
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Overview
QPS was founded in 1995 by Dr. Benjamin M. Chien as Quest Pharmaceutical Services to provide high quality bioanalytical LC-MS/MS contract services. The company has since changed its name to QPS and grown from a small molecule bioanalysis shop of three people to over 1,200 employees in the United States, Europe, Asia, India and Australia. QPS is a GLP/GCP-compliant contract research organization (CRO) supporting discovery, preclinical and clinical drug development, providing quality services to pharmaceutical and biotechnology clients worldwide. It has added services including Pharmacology, DMPK, Toxicology, Bioanalysis, Translational Medicine, and full-service Phase I–IV Clinical Development.
History
Dr. Benjamin M. Chien founded Quest Pharmaceutical Services in 1995 to provide high quality bioanalytical LC-MS/MS contract services. Since then, the name has changed to QPS and the company has posted impressive growth every year and has grown from a small molecule bioanalysis shop of three people to over 1,200 employees in the United States, Europe, Asia, India and Australia. Over the years, the company has adopted additional services, including Pharmacology, DMPK, Toxicology, Bioanalysis, Translational Medicine, and full-service Phase I–IV Clinical Development. QPS celebrated 30 years in business in 2025.
Products and positioning
A global leader in bioanalysis, preclinical and clinical research services; a GLP/GCP-compliant CRO supporting discovery, preclinical and clinical drug development.
Recent events
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