High quality bioanalitical services Since 1995
QPS Celebrated 30 Years in Business in 2025
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
Developing Next Generation CNS Drugs
Pharmacology
The QPS Pharmacology department is passionate about designing and implementing a developmental plan for your small molecules or biologic drug candidates, and together with our DMPK and Toxicology colleagues we help you develop custom-built research solutions
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DMPK Services
Improving Odds for Candidate Drugs
DMPK Services
Our scientists are passionate about drug discovery and development with extensive experience in drug metabolism and pharmacokinetics (DMPK).
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Bioanalysis
World-Leading Scientists Deliver Custom-Built Bioanalytical Solutions
Bioanalysis
Explore our full range of bioanalytical solutions to support pharmaceutical development from discovery, through clinical development and filing.
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Assay Finder
Search More Than 800 Validated Assays
Assay Finder
Searching for a Drug Assay, a Biochemical Biomarker Assay, or a Genomic Biomarker Assay? QPS is likely to have a validated assay to fit your needs.
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Translational Medicine
Brings Together Leading-Edge Technologies and Pharmaceutical Research
Translational Medicine
At QPS, translational medicine brings together leading-edge technologies and pharmaceutical research and development (R&D) experience to create a business service unit that works efficiently to advance your drug discovery and development program.
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Regulatory Affairs
A Full Suite of Regulatory Affairs Services to Drive Innovative Asset Development
Regulatory Affairs
Our custom-built global regulatory affairs solutions are designed to ensure your asset development and external stakeholder management are second to none.
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Medical Affairs
Comprehensive Medical Affairs Service Offerings to Drive Asset Development
Medical Affairs
Precision is key when exploring patient care solutions. The QPS experts offer a full suite of custom-built Medical Affairs solutions to support efficient and effective product development.
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Pharmacovigilance
Leading the charge in safety reporting with Argus
Pharmacovigilance
The QPS team brings together expert leadership, global reach, and a world class database to safeguard patients and support sponsors.
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Timeline
QPS Corporate History
2020
2019
2012
2011
2010
2008
2005
2004
1999
1997
1996
1995
1994
1984