Preanalytic Variables in Special Coagulation Testing
Clinical Implications
Rejection of Specimen: Impact

October 2008
Rejection of patient specimens as wide ranging impact including: the ordering physician, laboratory technologists and the performing laboratory. Most of all, it affects patient, who may already be worried because of their ongoing illness, who is now informed by their physician’s office that they would have to come back for another blood draw. This may mean time away from work, costs associated with travel to the laboratory, and most likely an addition phlebotomy charge. So based on our data between 80 and 160 patients being served by Mayo Medical Laboratory clients may also be affected on a monthly basis. This is likely not sustainable, which is what prompted us further.
Rejection of Specimen: Impact |
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?


