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Solutions by the numbers

3,500

available tests including 700+ advanced diagnostic tests

2,400~

patient service centers for more accessible care

850+

medical and scientific experts

A single-source lab provider for your routine and advanced diagnostic needs

Our menu of 3,500 genetic, esoteric, and routine tests allows you to get a clearer snapshot of your patients’ health, with specialized test panels and broad testing capabilities that reduce unnecessary complexity and enhance precision.

Genetics
Infectious diseases
Autoimmune diseases
Neurological disorders
Women's health
Cardiovascular diseases
Diabetes & pre-diabetes
Drug monitoring
See more >

Use the Quest Diagnostics Test Directory to search for tests and access result codes, specimen collection requirements, and more.

Explore test directory

Cutting-edge diagnostics with advanced testing technology

Quest has 8 state-of-the-art specialty labs nationwide that develop and perform routine and complex testing. Our labs run 24/7/365 with the capacity to process over 100k specimens daily and offer an extensive catalog of laboratory tests—with more than half being Quest exclusive lab-developed tests.

 

• Clifton Lab in New Jersey

• Marlborough Lab in Massachusetts

• San Juan Capistrano Lab in California

• The Quest Cardiometabolic Center of Excellence™ at Cleveland HeartLab® in Ohio

• AmeriPath: anatomic pathology services

• Dermpath: skin diagnostics services

• PhenoPath: hematopathology- and oncology-focused testing

• Athena Diagnostics: diagnosis of neurological, neuromuscular, and developmental disorders

Lab view Clifton Lab

Fast results that help you deliver your care at the right time

The sooner you get reliable test results, the sooner you can make critical clinical decisions for your patients. Our commitment to innovative technologies that enable fast, accurate turnaround times help support you in making informed treatment decisions quickly.

Turnaround for routine tests: 1-2 days*

Support for patients that meets them where they are

Quest is committed to empowering your patients to take charge of their health, offering solutions that make care, information, and diagnostics more accessible and affordable.

~2,400 patient services centers, mobile phlebotomy, and even at-home collection options make it easier for patients to complete their tests.

The MyQuest® app allows for easy online scheduling, instant access to test results, real-time updates, and more.

  • In-network with most major plans covering 90% of lives nationwide† 
  • Explore commercial coverage and coding guidelines here

  • We offer financial assistance programs and payment plans to help patients afford testing
  • Download the application for your patients to help them get the support they need

  • With real-time estimation, we make it easier for your office to explain the cost of testing to help set patients’ expectations and minimize billing surprises down the road
  • See billing and coding details here

Solutions for you that support a holistic approach to healthcare

Your day-to-day demands are already high—administrative burdens only add to the stress. When diagnostics are integrated smoothly into your practice, it allows you and your team to spend more time with patients.

 

Quanum® Lab Services Manager (QLSM): an online dashboard that helps enhance your practice’s efficiency and frees up valuable time for you to spend caring for patients.

• Access our full test menu 

• Order lab tests and supplies

• Review results in real time

• See critical action items

• Receive live updates on results

• Connect seamlessly with 950+ EHR systems using single sign-on

 

Discover QLSM as a complement to your EHR system and your one-stop-shop for lab-related needs.

Learn more
Quanum® Lab Services Manager (QLSM)

Let us help support your enhanced care with solutions beyond the test

Whether you have questions about our offerings or are interested in working with Quest to support your practice, our dedicated Account Team is here to help.

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*Most tests are performed within a few days, but some complex testing can take longer to complete.

†This is directional data. It is based on 2020 Health Leaders 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.

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Quest®, Quest Diagnostics®, any associated logos, and all associated Quest Diagnostics registered or unregistered trademarks are the property of Quest Diagnostics. All third-party marks—® and ™—are the property of their respective owners. © 2025 Quest Diagnostics Incorporated. All rights reserved. Image content features models and is intended for illustrative purposes only.