Updated 8/20/2026
Due to the ongoing outbreak of cyclosporiasis in multiple states across the United States, including Michigan, this is an informational bulletin to provide guidance on appropriate test ordering for Cyclospora cayetanensis, the causative agent of cyclosporiasis in humans.
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Laboratory Services
To help ensure accurate results and avoid specimen collection delays, please note the specific collection requirements for this test. Cyclospora testing requires specific collection and preservative requirements that may differ from routine stool studies. Please ensure your office has the appropriate collection supplies available if you anticipate ordering this test.
As a reminder, in observance of the Independence Day holiday, all Corewell Health Laboratory Patient Service Centers (drawstations) will be closed on Friday, July 3, 2026.
Per our holiday schedule, when a holiday falls on a Saturday, it is observed on the preceding Friday. Therefore, our drawstations will be closed on Friday, July 3, as the observed holiday, and will remain closed on Saturday, July 4.
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.
ffective June 2, 2026, Paraneoplastic Autoantibody Evaluation will no longer be offered by Mayo. The recommended alternate test will be the Encephalitis Antibody Evaluation performed at Quest.
Due to the short notice from Mayo, the new Quest test will not be orderable so will need to be ordered as a Reference Lab Sendout for Miscellaneous Test.