Rules for mass spectrometry applications in the clinical laboratory

Area of Science:

• Clinical laboratory analysis
• Analytical chemistry
• Medical diagnostics

Background:

• Mass spectrometry (MS) is increasingly vital for quantifying biomarkers and xenobiotics in clinical settings.
• Current MS applications range from in-house methods to automated systems, with a projected shift towards more complex operations.
• Clinical MS methods face challenges in operation, evaluation, and regulatory frameworks compared to photometry-based systems.

Purpose of the Study:

• To highlight the challenges in operating and regulating MS-based analytical methods in clinical laboratories.
• To compare the regulatory landscape of clinical MS with other bio-analytical fields.
• To propose procedural requirements for robust and safe clinical application of MS methods.

Main Methods:

• Review of current MS applications in medical laboratories.
• Analysis of existing regulatory standards (CLSI 62A, ISO 15189, IVDR).
• Identification of best practices for method description, batch release, competence, maintenance, and continuity management.

Main Results:

• MS methods are essential but operationally complex and lack specific regulatory guidelines in clinical diagnostics.
• Regulatory frameworks for clinical MS are less defined than in food, pharmaceutical, or forensic analysis.
• Key areas for improving MS application include method documentation, quality control, personnel training, and system upkeep.

Conclusions:

• Standardized procedural requirements are needed to ensure the robustness and patient safety of MS methods in clinical laboratories.
• Adherence to general standards like CLSI 62A and ISO 15189, alongside practical advice, can enhance clinical MS implementation.
• Further development of specific regulatory guidelines for clinical MS is recommended.