Troponin interference with special regard to macrocomplex formation

Area of Science:

• Cardiology
• Clinical Chemistry
• Laboratory Medicine

Background:

• Troponin-T and troponin-I are established gold-standard biomarkers for diagnosing cardiological diseases.
• Clinical guidelines recommend troponin analysis for diagnosis and prognosis in numerous cardiac conditions.
• Elevated troponin levels can occur due to various medical circumstances beyond acute cardiac events.

Purpose of the Study:

• To investigate and detail troponin artifacts, focusing on interference factors.
• To specifically examine macro-immune complex formation as a significant cause of false troponin elevations.
• To provide a comprehensive overview of interference in troponin testing.

Main Methods:

• Conducted a literature search to identify relevant studies on troponin artifacts.
• Focused on the period from 2006 to June 2021.
• Analyzed literature concerning interference factors, particularly macro-immune complexes.

Main Results:

• Identified macro-immune complex formation as a critical interference factor in troponin assays.
• Documented various medical circumstances leading to spurious troponin elevations.
• Highlighted the clinical significance of understanding these artifacts for accurate diagnosis.

Conclusions:

• False troponin elevations due to artifacts, such as macro-immune complexes, can impact clinical decision-making.
• Awareness of interference factors is essential for correct interpretation of troponin results.
• Further research and improved assay methodologies may help mitigate these interference issues.