Effective March 4, 2026, an Antiphospholipid Antibody Panel will be available for adult patients in the emergency, observation, and inpatient settings across the Corewell Health System.
Corewell Health System, Emergency, Inpatient
Browsing Tag
New Test
Go-Live Date: December 17, 2025
Following Phase One in November, where tests previously referred to ARUP and some Mayo Clinic Lab tests were transitioned to Quest Diagnostics, we are now moving into Phase Two of this important change. Corewell Health Laboratory is continuing its transition to Quest Diagnostics as our primary reference testing partner.
The following information was updated in the Lab Catalog.
All changes are for Corewell Health Laboratories in Southwest and West Michigan. For Laboratories in Southeast Michigan, please visit:corewellhealth.org/labcatalog and navigate to the Southeast Michigan site.
The following information was updated in the Lab Catalog.
All changes are for Corewell Health Laboratories in Southwest and West Michigan. For Laboratories in Southeast Michigan, please visit:corewellhealth.org/labcatalog and navigate to the Southeast Michigan site.
Referral/Sendouts, Southeast Michigan, Southwest Michigan, West Michigan
Primary Reference Lab Change to Quest Diagnostics
Effective November 19, 2025
Corewell Health Laboratory is transitioning to Quest Diagnostics as our primary reference testing laboratory. This change means that nearly all referral and send-out tests will now be performed by Quest Diagnostics. A limited number of tests will continue to be sent to other laboratories to ensure we meet the needs of our patients and clinicians.
What You Need to Know:
- Test Crosswalks: Tests currently performed at ARUP and Mayo Clinic Labs will be matched to comparable tests at Quest Diagnostics.
- Discontinued Tests: Tests with low utilization or those no longer deemed clinically necessary will be discontinued.
- New LAB Numbers: All tests will receive new LAB numbers, which must be updated in your EMR compendium if interfaced.
- Collection Devices: Some tests may require different collection devices.
- Transition Timeline:
- November 19, 2025: Focus on tests currently referred to ARUP.
- December 17, 2025: Focus on tests currently referred to Mayo Clinic Labs.
- Crosswalk Resources: Crosswalks between current and future test offerings will be provided to help you prepare.
- Test Directory Access: Please refer to your regional Lab Test Directory for details on specific test changes. ARUP and Mayo Clinic Lab test pages will include links to the corresponding Quest Diagnostic tests.
We understand the significance of these changes and are committed to supporting your practice throughout this transition. Updates and modifications will be communicated promptly.
Contact Information:
- Corewell Health East Sendouts: 248.551.9045
- Corewell Health West Referrals: 616.267.2753
- Or use the Contact Us link above.
General Information, Southwest Michigan, West Michigan
Specimen Collection and Test Updates – August 2025
The following information was updated in the Lab Catalog.
All changes are for Corewell Health Laboratories in Southwest and West Michigan. For Laboratories in Southeast Michigan, please visit:corewellhealth.org/labcatalog and navigate to the Southeast Michigan site.
The following information was updated in the Lab Catalog.
All changes are for Corewell Health Laboratories in Southwest and West Michigan. For Laboratories in Southeast Michigan, please visit: corewellhealth.org/labcatalog and navigate to the Southeast Michigan site.
The following information was updated in the Lab Catalog.
All changes are for Corewell Health Laboratories in Southwest and West Michigan. For Laboratories in Southeast Michigan, please visit: corewellhealth.org/labcatalog and navigate to the Southeast Michigan site.
The following information was updated in the Lab Catalog.
All changes are for Corewell Health Laboratories in Southwest and West Michigan. For Laboratories in Southeast Michigan, please visit: corewellhealth.org/labcatalog