Manuals, Guides, Instructions & InformationSpecimen Requirements and Information – Corewell Health Laboratory clients, please visit this Laboratory 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. ManualsLCD MICHIGAN MAC J-8NCD Medicare ManualSpecimen Collection Manual GuidesGreiner Tube Visual Crosswalk ChartOrder of DrawCommon Diagnosis Reference ToolQuick Reference Supply GuideLaboratory Tube ChartAcceptable Stool ContainersLab Specimen Collections GuidelineBlood Gas Reference Ranges InstructionsOrder of DrawPre-Surgical Testing ProcedureNeedlestick Exposure and Source Testing24hr Urine Instructions24hr Urine Preservative PrecautionsFIT Test Collection Instructions10 Steps for Proper Blood Culture CollectionFecal Occult Blood Testing InformationCorewell Health Laboratory About UsInsurance ParticipationCorewell Health Laboratory Patient Service Centers