Skip to main content

The lab of choice for clinical drug monitoring

For many years, Quest Diagnostics has been trusted for our commitment to responsible clinical drug testing services that help minimize overtesting, while providing the right tests, at the right time, and at the right cost, to help you make more informed decisions in the fight against drug misuse. We help you protect your practice and your patients with state-of-the-art drug testing, including an extensive menu for prescription pain medications, other controlled substances, and illicit drugs.

We agree with the CDC and multiple other organizations that drug monitoring is the standard of care when controlled medications are prescribed. This can help ensure compliance and identify harmful drug interactions, misuse, abuse, and diversion.

Rely on an experienced and trusted leader in clinical drug monitoring

A lab that is easy to work with

We’re committed to providing exceptional customer service and support at every step, so you can spend less time on paperwork and more time caring for your patients. We work every day to efficiently deliver the information you need when you need it and to make testing easier and more accessible for your patients.

* This is directional data. It is based on 2020 HealthLeaders membership data of private third-party payers at the Managed Care Organization (MCO) level, as well as Quest internal data. Information is believed to be accurate as of January 1, 2020; however, it is subject to change. Does not include Kaiser Permanente access data.

Data insights to help inform clinical drug monitoring protocols and care decisions

At the patient, provider, health system, and community levels we leverage our powerful database of laboratory test results and data analysis systems to deliver actionable insights that can help you manage and strengthen your clinical drug monitoring services.

Comprehensive testing and resources to help identify and combat drug misuse

With an extensive drug testing menu, state-of-the-art technologies, and hundreds of on-staff medical experts, we deliver a powerful combination of industry-leading resources to help protect your patients and optimize their care at every stage.

When you choose Quest, you’ve chosen one lab that can help you with all your testing needs.

Contact us to learn how we can meet your needs at every stage of patient care.

Contact us

Our toxicology experts are here for you

Whether you want to discuss test selection, sample requirements, results interpretation, or to schedule an in-depth call for more complex questions, our team is available via phone at

1.877.40.RXTOX (1.877.407.9869)