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May 2023
The following information was updated in the Lab Catalog.
Beginning May 31st, 2023, the following Toxicology blood test’s reference range will be updated to reflect current best practices. Please refer to the Corewell Health Lab Test Directory for new reference ranges.
Tissue specimens less than 0.1cm may yield insufficient results if submitted for Tissue Pathology. To make the best use of diagnostic tissue material please follow the below guidelines:
| Biopsy Size | Order Code | Test | Preservative |
| <0.1cm | LAB2111263 | Fine Needle Aspiration (FNA) Cytology | *CytoLyt solution |
| >0.1cm | LAB8 | Tissue Pathology | 10% Formalin |
*Place entire specimen in CytoLyt. Do not attempt to make smears from specimen.
Please contact the Corewell Health Pathology Department at (616)267-2622 Mon-Fri, 8am-5pm, or the Corewell Health Laboratory Call Center at (616)774-7721, 24/7 to speak with a Pathologist.