A simultaneous evaluation of three multiparametric coagulation instruments: BFA, HEMOLAB and STA

Area of Science:

• Clinical Chemistry
• Hematology
• Coagulation Diagnostics

Background:

• Multiparametric coagulation instruments are crucial for hemostasis testing.
• Evaluating instrument performance with various reagents is essential for accurate diagnostics.
• Standardization of coagulation tests remains a challenge in clinical laboratories.

Purpose of the Study:

• To assess the analytical performance of three multiparametric coagulation instruments.
• To compare instrument performance using different reagents for activated Partial Thromboplastin Time (aPTT) and Prothrombin Time (PT) assays.
• To identify challenges in optimizing the combination of instruments and reagents for coagulation testing.

Main Methods:

• Evaluation of chronometric tests for aPTT (CK-Prest, automated APTT) and PT (Recombiplastin, Thromborel).
• Analysis of within-run precision and linearity for each instrument-reagent combination.
• Comparative studies to assess analytical performance differences.

Main Results:

• Significant differences in analytical performance were observed between instruments, influenced by the specific reagents used.
• The study highlighted the difficulty in achieving optimal results by balancing instrument capabilities with reagent characteristics.
• Mechanical coagulation instruments demonstrated greater versatility compared to optical instruments in this evaluation.

Conclusions:

• Instrument and reagent selection significantly impacts the accuracy of coagulation test results.
• Mechanical instruments offer broader applicability in coagulation diagnostics compared to optical systems.
• Further evaluation of newer generation coagulation instruments is recommended to refine these conclusions.