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Quest Diagnostics

Joint Directory of Services (JDOS)

The Joint Directory of Services (JDOS) offering is a web-based application hosted by Quest Diagnostics that allows hospitals to publish a customized online directory of tests to support their ordering practices and codes across all subsidiaries.

The online directory combines all Quest, third party, and/or in-house laboratory tests orderable by physicians to simplify test management. 

For more information, ask your Quest representative.

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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.