
Corewell Health Southfield and Quest Diagnostics have completed a previously announced transaction to establish a laboratory services joint venture to expand access to more resources in Michigan.
Equity ownership of the joint venture, named Diagnostic Lab of Michigan, will be shared 51 percent by Quest and 49 percent by Corewell Health. Terms of the deal were not disclosed.
Quest and Corewell Health’s existing laboratories will continue to provide lab services to the joint venture until a 100,000-square-foot laboratory facility is completed at the Corewell Health Southfield Center. It is scheduled to open by in Q1 2027.
In addition, Quest’s Collaborative Lab Solutions (Co-Lab) hospital lab management services are available across all 21 Corewell Health hospitals.
Quest also now offers a comprehensive suite of Co-Lab Solutions for Corewell Health, including supply chain, lab management, patient blood and anemia management, and lab analytics and stewardship.
Corewell Health, a not-for-profit health system with more than 65,000 employees, including 12,000-plus physicians and advanced practice providers and more than 15,500 nurses. The system includes 21 hospitals, 300-plus outpatient locations, and several post-acute facilities.
It also operates Priority Health, a provider-sponsored health plan serving more than 1.3 million members.
Quest Diagnostics, located in Secaucus, N.J., annually serves one in three adult Americans and half the physicians and hospitals in the United States. It has more than 55,000 employees.
For more information, visit corewellhealth.org or questdiagnostics.com/.
For more information on Collaborative Lab Solutions, visit here.



