World-Leading Scientists Deliver Custom-Built Bioanalytical Solutions
Explore our full range of bioanalytical solutions to support pharmaceutical development from discovery, through clinical development and filing.
QPS has accomplished a series of milestones in Bioanalysis over the past 20 years. This infographic demonstrates QPS accomplishments in both pharmacokinetics and pharmacodynamics.
QPS is a Leader in Small Molecules Drug Discovery with deep experience in small molecule quantitation using UPLC-MS/MS.
QPS leads the way in Biologics with hands on Bioanalytical Chemists, Deep Experience in Cell Based Studies, and Proven Results with Immunogenicity Testing.
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.
QPS has supported cell and gene therapy product development since 2003 on 45+ ASO/siRNA/aptamers and 20+ mRNA/vectors programs and can use our hard-earned experience to help you navigate PK, immunogenicity, biodistribution, viral clearance, and ADME properties of these novel modalities in this rapidly expanding field.
QPS is a leader in bioanalysis for pharmaceutical research, including inductively coupled plasma mass spectrometry (ICP-MS).
QPS strives to demonstrate thought leadership through regular publication of Scientific Posters, presented at National and International conferences. Click here to see our recent posters.
Search More Than 800 Validated Assays
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.
QPS is proud to be a strategic partner to a wide range of biotech and pharmaceutical companies. As such, we have participated in the development of numerous agency-approved drugs.
Dr. Benjamin M. Chien founded Quest Pharmaceutical Services in 1995 to provide high quality bioanalytical LC-MS/MS contract services. Since then, QPS has grown from a small molecule bioanalysis shop of three people to over 1150+ employees in the United States, Europe, India and Asia, and added services such as toxicology, neuropharmacology, DMPK and clinical development.