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We have restored nearly all systems affected by the global information outage, and welcome patients to visit our Patient Service Centers. To reschedule a missed appointment, please visit our online scheduling site.   


Knowledge center

Knowledge center for drug testing

Regardless of your tenure or experience with workplace drug testing, it can sometimes be a challenge to maintain your proficiency. We strive to provide tools that help to answer your questions, improve your programs, and leverage best practices.

The resources in our Knowledge Center give you access to program-enhancing tools and the latest data and trends. We know that staying well-informed is important to you, therefore, we provide most of these resources free of charge. Questions? Contact us online

Drug Testing Index

The Drug Testing Index (DTI) reveals insights into patterns of drug use among the American workforce. This analysis of millions of drug test results provides annual drug use positivity as well as industry-specific insights.

Experience all DTI resources and past releases

Drug Testing Savings Calculator

You can measure the value of drug testing with more accuracy than ever before. The step-by-step process gets you to a report in minutes based on your company and industry data.

Tabulate your ROI

Drug testing blog

Our blog offers news and resources to keep you informed about science, technology, regulations, state and Federal legislation, and trends in workplace drug and alcohol testing.

Stay informed

Drug testing guide

Our most popular resource can help you to create an effective program that deters drug use. Determine what is appropriate for your business, workforce type, and location using a range of testing reasons and test types.

Get the guide

Online drug testing training

Training your workforce about alcohol and drug testing is critical to maintaining a drug-free workplace. We offer a variety of online training programs to choose from for additional education.

Take our training

Laboratory licenses and accreditations

All Quest Diagnostics' testing locations are appropriately licensed/certified under the Clinical Laboratory Improvement Amendments of 1988 (CLIA 88) and as required by certain State laboratory licensure programs.

Visit the following links pertaining to licences and accreditations for Quest laboratories performing toxicology drug testing services. 

Lenexa, KS laboratory

Norristown, PA laboratory 

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