Preanalytic Variables in Special Coagulation Testing

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October 2008

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Jump to section:

• Introduction
• Variables Affecting Test Results
• Preanalytic Variables Affecting Coagulation Testing
• Special Coagulation Test Algorithms
• Case History
• Preprocedure Coagulation Tests
• PT and aPTT Diagram
• Normal Hematocrit and High Hematocrit
• Preprocedure Coagulation Tests
• Case Conclusion
• Case Example
• Repeat Testing With Fresh Sample
• Intrinsic and Extrinsic Diagram
• Clotted Specimen: Definition of Clotted Specimen
• Significance of Clotted Specimen
• Significance of Clotted Specimen
• Preanalytic Factors Affecting Testing Results: Clotted Specimen
• Scope of the Problem
• Event Capture Tool
• Clotted Specimens as a Percentage of Test Volume
• Clotted Specimens 2007
• Clinical Laboratory Standards Institute
• Rejection of Specimen: Impact
• Causes of Clotted Specimen
• Steps Towards Reducing Clotted Specimens
• Conclusion
• Questions?