Laboratory BulletinsSpecimen Requirements and Information - Corewell Health Laboratory clients of Royal Oak, Troy, Grosse Pointe and Farmington Hills please visit this Laboratory Test Directory. Corewell Health Laboratory clients of Dearborn, Wayne, Trenton and Taylor please click on link to download Corewell Health Dearborn, Wayne, Trenton and Taylor Test Directory. Reporting Options - Please discuss the varied reporting options with your Corewell Health representative. They will work with you to choose your best option.Ordering Options – Please contact your Corewell Health representative, or contact Customer Service for Royal Oak, Troy, Grosse Pointe, & Farmington Hills at 800-551-0488, and Customer Service for Corewell Health Dearborn, Wayne, Trenton and Taylor at 800-245-3725. 2026 Bulletins Cyclospora Test Ordering Guidance July 8, 2026 Oligoclonal Band Profile July 8, 2026 Encephalitis Autoantibody Evaluation July 8, 2026 Lipoprotein (a) Test Change June 3, 2026 Paraneoplastic Autoantibody Evaluation June 2, 2026 Body Fluid Culture – Specimen Collection Update June 1, 2026 Component Allergen-Specific IgE Testing April 1, 2026 Hydrogen and Methane, Breath Test Change March 3, 2026 Procollagen 1 intact N-terminal propeptide (P1NP) Effective January 7, 2026 2019–2025 Bulletins2025 Bulletins 2024 Bulletins2023 Bulletins2022 Bulletins2021 Bulletins2020 Bulletins2019 Bulletins