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Current and future challenges in quality assurance in molecular diagnostics
Parviz Ahmad-Nejad1, Tester Ashavaid2, Aldo Vacaflores Salinas3
1Institute for Medicine Laboratory Diagnostics, Centre for Clinical and Translational Research (CCTR), HELIOS University Hospital, Wuppertal, Witten/Herdecke University, Germany.
Quality assurance for molecular genetic assays is becoming more complex. The ISO 15189 guideline offers solutions for quality management in molecular diagnostics, addressing challenges in validation and control.
Area of Science:
- Clinical Laboratory Science
- Molecular Diagnostics
- Quality Management Systems
Background:
- Molecular genetic assays require increasingly complex quality assurance (QA) and quality control (QC).
- New molecular genetic parameters, methods, validation, and QC for quantification/multiplex assays present ongoing challenges.
- Existing QA/QC guidelines are often outdated or insufficient for innovative molecular diagnostic tests.
Purpose of the Study:
- To provide an overview of the possibilities and challenges in QA for molecular parameters.
- To present potential solutions for enhancing test confidence in molecular diagnostics.
- To highlight the utility of the ISO 15189 guideline for molecular diagnostic laboratories.
Main Methods:
- Review of current challenges in molecular genetic assay QA/QC.
- Exploration of the ISO 15189 guideline as a framework for medical laboratories.
- Identification of potential solutions for quality assurance in molecular diagnostics.
Main Results:
- Molecular diagnostics face significant QA/QC hurdles due to assay complexity and evolving formats.
- The ISO 15189 guideline provides a structured approach to meet the requirements of molecular diagnostic testing.
- Solutions exist to integrate new molecular test procedures into existing quality assurance frameworks.
Conclusions:
- Addressing the evolving QA/QC needs in molecular diagnostics is crucial for test confidence.
- ISO 15189 serves as a valuable orientation for establishing robust quality management in molecular diagnostic laboratories.
- Proactive implementation of updated QA/QC strategies is essential for reliable molecular genetic testing.
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Key parameters for method validation include:

