This monthly bulletin includes updates about insurance payor nuances, diagnosis coding reminders, and other helpful tips and information regarding all things laboratory billing.
If you have any questions, please reach out to your laboratory account manager.
Effective October 10, 2025, Corewell Health Reference Laboratory West will implement an updated protocol for the Lupus Screen (LAB478). This change is designed to improve diagnostic accuracy for patients undergoing anticoagulant therapy, where false-positive or false-negative results can complicate clinical decision-making.
Recent studies have demonstrated that anticoagulants, particularly direct Xa inhibitors, can significantly affect Lupus testing outcomes. To mitigate this, our laboratory is implementing best practices as outlined in the following sources:
These sources emphasize the importance of screening for anticoagulants prior to Lupus testing to avoid misleading results.
Before performing the Lupus Screen, the lab will now run a UFH anti-Xa assay to detect anticoagulant presence. Based on the results:
This protocol ensures that Lupus testing is only performed when results are likely to be reliable, reducing the risk of misdiagnosis due to anticoagulant interference. Providers are encouraged to consider timing of anticoagulant therapy when ordering Lupus testing.
For any questions or concerns, please contact the hematopathologist covering coagulation services, or the on-call hematopathologist after hours.
Due to a vendor transition for printing services at Corewell Health Laboratories Southwest and West, there will be a temporary pause in printing paper requisitions and forms.
Disruption Dates:
October 15 – November 3, 2025
What You Need to Know:
We appreciate your understanding and apologize for any inconvenience this may cause.
Effective December 31, 2025, the URL corewellhealth.testcatalog.org will be discontinued.
There will be no automatic redirect to the new site.
To avoid disruption of service, please update your saved links or browser favorites for the Lab Catalog (also known as the Lab Test Directory) to:
👉 corewellhealth.org/labcatalog
This landing page allows you to select the appropriate region for you or your patient’s specimen and will always direct you to the most up-to-date catalog URL for your area.
✅ Update your bookmarks today to ensure uninterrupted access to lab testing information.
This monthly bulletin includes updates about insurance payor nuances, diagnosis coding reminders, and other helpful tips and information regarding all things laboratory billing.
If you have any questions, please reach out to your laboratory account manager.
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.
Updated 10/1/2025
Effective 10/1/2025, 5 mL Pearl top tubes will no longer be utilized for high sensitivity troponin testing at Corewell Health East Laboratories. In lieu of pearl top tubes, 4 mL lavender top tubes will be the preferred tube type for High sensitivity troponin testing. Should a Pearl top tube be sent for high sensitivity Troponin testing, it will still be accepted and testing performed.
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.