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Quest Diagnostics
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Elevate your recruitment mix with a targeted approach. Quest Diagnostics bridges the gap between strict trial criteria and the patients who match them. We help identify, target, and recruit eligible participants—ensuring they are clinically verified before they get screened.

Anchor your recruitment strategy with Quest Diagnostics for a measurable impact on your trial’s speed, cost, and success:

Is your clinical trial on the list?

Discover if your study is already pre-matched with our patient network. Check the list of active clinical trials where Quest can identify and reach the patients you need.
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Is your clinical

See the difference: How Quest patient recruitment drives more impact

Quest Diagnostics targets clinically eligible patients from day one—driving greater study impact and accelerating more qualified patients into randomization.

Why recruit with Quest

80 billion+ lab results
to date

66 million+ patients
with email addresses

Enable precise patient identification with third-party data, including claims data

3,500 lab tests, including 
900+ genetic tests

HIPAA-compliant
recruitment

We help recruit highly qualified patients across various clinical trials:

How Quest recruitment works

Start recruiting Quest-qualified patients in 4 easy steps

Case studies

Targeted, cost-effective strategies to improve patient recruitment, enrollment, and clinical trial diversity
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Revitalizing recruitment in a lupus rescue study: A collaborative approach by Quest Diagnostics and PatientsLikeMe
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Request a proposal

See how Quest can help validate your site strategies and determine how many patients we can help recruit for your 
clinical trial.

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Our company

Quest® is the brand name used for services offered by Quest Diagnostics Incorporated and its affiliated companies. Quest Diagnostics Incorporated and certain affiliates are CLIA-certified laboratories that provide HIPAA-covered services.  Other affiliates operated under the Quest® brand, such as Quest Consumer Inc., do not provide HIPAA-covered services. 

 

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. © 2026 Quest Diagnostics Incorporated. All rights reserved. Image content features models and is intended for illustrative purposes only. May include AI-generated and/or AI-modified imagery.