In vitro evaluation of a new viscoelastometry-based point-of-care analyzer.

Area of Science:

• Medical Diagnostics
• Point-of-Care Testing
• Hemostasis Analysis

Background:

• The VCM (Viscoelastic Coagulation Monitor) is a novel point-of-care analyzer for rapid hemostasis assessment.
• Its design is suitable for challenging, austere environments.
• This study aimed to validate the VCM's performance and applicability.

Purpose of the Study:

• Evaluate VCM repeatability, reproducibility, and interanalyzer correlation.
• Determine reference values in a specific population.
• Assess correlation with standard coagulation tests and platelet counts.
• Compare VCM performance with the TEG5000 analyzer.
• Test VCM resistance to stress conditions simulating austere environments.

Main Methods:

• Repeatability and reproducibility assessed using quality control samples (n=10).
• Reference values established from blood donors (n=60).
• Correlations with standard assays performed on ICU patients (n=30) and blood donors (n=60).
• TEG5000 correlation assessed using blood donor samples.
• Vibration resistance tested on blood donor and quality control samples.

Main Results:

• Repeatability and reproducibility CVs ranged from 0% to 11%.
• Excellent interanalyzer correlation (r² 0.927–0.997) and TEG5000 correlation (r² 0.75–0.92).
• Reference values aligned with manufacturer data; limited correlation with conventional coagulation tests.
• VCM exhibited excellent resistance to stress conditions.

Conclusions:

• The VCM analyzer is reliable, user-friendly, and correlates well with the TEG5000.
• Results support VCM's potential use in austere environments, despite logistical considerations.
• Further research is recommended prior to widespread clinical implementation.