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 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 Phosphatidylethanol (PEth) Testing Update December 17, 2025 Meconium Drug Screen Testing Update December 3, 2025 New Blood Bank Requirement for Transfusion Specimens November 30, 2025 Primary Reference Lab Change to Quest Diagnostics November 19, 2025 Reference Lab Transition to Quest Diagnostics 11/19/2025 Go-Live (Quest Conversion Crosswalk) November 19, 2025 Hypercoagulable Testing Reduction October 29, 2025 C. difficile GDH/Toxin Antigen testing reporting frequency change (Royal Oak only) October 14, 2025 De-Implementation of Fecal Occult Blood Testing: Adult Emergency Room (ED) and Inpatient October 1, 2025 Amnisure ROM Testing October 1, 2025 Discontinuation of Pearl Top Tube Utilization October 1, 2025 New MRSA PCR Test Order September 3, 2025 Bone Marrow Culture Ordering and Collection July 30, 2025 PD-L1 22C3 Immunohistochemistry (Lab Only) July 30, 2025 Hematology Resulting Updates July 30, 2025 CSF Specimens on Suspect Creutzfeldt-Jakob Disease (CJD) Patients July 14, 2025 Aldosterone & Renin Testing July 2, 2025 Device Recall: Bordetella pertussis/parapertussis PCR June 24, 2025 Updated Inpatient and Emergency Center Urinalysis Order and Collection June 4, 2025 Critical Value Cut-Offs for Arterial and Venous Cord Blood Gases May 15, 2025 Lactic Acid Updates May 5, 2025 Erythrocyte Sedimentation Rate (ESR) Stability Awareness April 28, 2025 Discontinuation of Lamellar Body Count Order (LBC) March 12, 2025 Pancreatic Elastase and H. pylori Antigen March 12, 2025 Gift of Life Michigan (GOLM) COVID Testing Update March 12, 2025 Sexually Transmitted Infections (STI) – Testing Update March 12, 2025 Hemoglobinopathy Evaluation Reference Range Changes February 24, 2025 Huma Papillomavirus (HPV)-Testing Update February 3, 2025 Improved Molecular Vaginitis Screen December 4, 2024 PTH/Calcium Update November 6, 2024 Discontinuation of ACE Genotyping for Coronary Risk Assessment November 4, 2024 Updates to the Respiratory Pathogen Panel Test October 28, 2024 Bone Marrow Culture Collection October 24, 2024 Lipid & Vitamin D Autocancel Policy for Medicare Patients September 19, 2024 Discontinuation of Respiratory Pathogen Panel Testing for Outpatients August 29, 2024 Chemistry Assays Update July 21, 2024 Discontinuation of Certain Prenatal Screening Tests at Corewell Health East July 21, 2024 Outreach Testing Optimization – Specimen Retention Update June 17, 2024 Blood Gas Panels Update June 11, 2024 Group A Strep, NAA and Staph Aureus/MRSA PCR Collection Device Change June 3, 2024 Discontinuation of Rapid Intrapartum Group B Strep Testing June 3, 2024 Conventional Pap Smear Discontinuation May 1, 2024 BioPlex Epstein Barr Virus Antibody Testing April 2, 2024 Change to 5-Fluorocytosine Therapeutic Range March 12, 2024 Reflex Mismatch Repair (MMR) Immunohistochemistry for New Diagnosis of Rectal Cancer March 11, 2024 Corewell Health East Laboratory Microbiology Consolidation March 1, 2024 Bio‐Rad BioPlex Go‐Live (Autoimmune & Infectious Disease Antibody Testing) February 6, 2024 Solid Tumor 15 Genes Panel by NGS February 6, 2024 Glucose Reference Range Change January 9, 2024 2019–2025 Bulletins2025 Bulletins 2024 Bulletins2023 Bulletins2022 Bulletins2021 Bulletins2020 Bulletins2019 Bulletins