Why Quest Diagnostics

Quest Diagnostics


Why Quest Diagnostics?

Two technicians working in a drug test labQuest Diagnostics offers reliable workplace drug testing, an extensive collection site network, and personal service and support. Our global network of laboratories participates in rigorous laboratory proficiency testing to maintain complete quality assurance.

As your drug testing provider, we will guide you to choose the right test and timing to optimize your drug testing program's success. We want to help you achieve your drug testing goals. We're more than just a lab; we're a true partner in your success. 

Our services include:

  • US SAMHSA-certified laboratories that offer broad testing capacity and redundancy
  • Unparalleled access to a network of nearly 10,000 collection sites throughout the United States
  • More than 3,500 company-employed couriers and 25 aircraft to manage the logistics for specimen transportation
  • Integrated Medical Review Officer (MRO) services
  • Multiple drug test result reporting options
  • More than 100 dedicated customer service employees