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Outage notice:

Due to the global information outage that occurred Friday, Quest is taking swift action to respond, recover and restore our operations. Our Patient Services are operating with reduced capacity so you may experience longer wait and service times. Our Customer Contact teams are currently unavailable. We appreciate your patience as we work toward returning to normal operations. 


Accelerating oncology drug development


We bring Quest’s expertise and quality to each project 

You’ll have direct access to our team of experienced physicians, scientists, and researchers who are leaders in their fields. Each is committed to building strong relationships with our partners to drive research efforts forward. By working together, we can improve outcomes for patients around the world.
Lab workers working together

Comprehensive development solutions

  • Design & development consulting
  • Biomarker strategy & development
  • Phase I-IV clinical solutions
  • Decentralized clinical trials
  • Global laboratories
  • Specialty testing
  • Data, analytics, and informatics
  • Regulatory consulting
  • Companion diagnostics
  • Market access
  • Commercialization solutions
  • Patient support services

Full-service labs with broad testing menus in routine and esoteric testing

  • Anatomic pathology 
  • Chemistry
  • Coagulation
  • Cytogenetics
  • Flow cytometry 
  • Hematology
  • Immunology
  • Infectious diseases
  • Mass spectrometry 
  • Microbiology
  • Molecular genetics
  • Molecular infectious disease
  • and more


Therapeutic area expertise

Our team of therapeutic area medical directors support deeper understanding of medical conditions, patient populations, and the competitive landscape in specific disease areas, identifying opportunities for therapy innovation and differentiation.

Global footprint

Our 15 partner labs across 75 countries enable you to access diverse patient populations that suit the unique needs of your trial. Our global network is powered by GDN, a Quest Diagnostics division.

Regulatory, quality & compliance

We are compliant with regulatory requirements and maintain strict quality control standards to ensure the integrity of your data.

Let's discuss your project

Contact our pharma solutions experts to design a custom program to accommodate the needs of your study.

Let's talk