Cardiac troponin assays: analytical issues and clinical reference range cutpoints

Area of Science:

• Cardiology
• Clinical Chemistry
• Laboratory Medicine

Background:

• Recent consensus documents highlight cardiac troponin's role in diagnosing acute myocardial infarction.
• Established criteria now exist for troponin assay reference cutpoints and imprecision.
• Laboratory and cardiology communities have collaborated on troponin assay recommendations.

Purpose of the Study:

• To review analytical issues in cardiac troponin assays.
• To discuss assay standardization and imprecision challenges.
• To outline the establishment and implementation of clinical decision cutpoints for troponin.

Main Methods:

• Review of current literature and consensus documents.
• Analysis of analytical challenges in troponin assay performance.
• Discussion of standardization strategies and clinical implementation.

Main Results:

• Cardiac troponin assays are central to redefining acute myocardial infarction diagnosis.
• Standardization and managing assay imprecision are key analytical challenges.
• Clear criteria for cutpoints and their clinical implementation are essential.

Conclusions:

• Addressing analytical issues in troponin assays is vital for accurate diagnosis.
• Standardization and appropriate cutpoint implementation improve clinical decision-making.
• Collaboration between laboratories, clinicians, and industry is necessary for optimal troponin monitoring.