BeadWatch: Automated Longitudinal Quality Control Monitoring for Luminex Bead-Based Immunoassays in...

Area of Science:

• Clinical laboratory science
• Immunogenetics
• Quality control in diagnostics

Background:

• Luminex bead-based immunoassays are critical for human leukocyte antigen (HLA) antibody testing.
• Current quality control (QC) monitoring in histocompatibility laboratories is predominantly manual, relying on spreadsheets or visual inspection.
• Existing manual methods are insufficient for detecting gradual trends in instrument, reagent, and operator performance, potentially impacting testing accuracy.

Purpose of the Study:

• To develop an automated QC dashboard application named BeadWatch for Luminex immunoassays.
• To enhance the statistical trend analysis required by ISO 15189, EFI, and ASHI standards.
• To provide a user-friendly, open-source solution for real-time performance monitoring in HLA antibody testing.

Main Methods:

• Developed BeadWatch, an open-source, automated QC dashboard application.
• Integrated direct data ingestion from vendor databases (e.g., OneLambda HLA Fusion).
• Implemented Levey-Jennings charts, I-MR views, cross-instrument/operator comparisons, and configurable alerts.

Main Results:

• Ingested 20 years of historical data, revealing instrument lifecycle trajectories and performance changes post-platform transition.
• Successfully identified a pipetting error through automated alerts before manual recognition.
• Demonstrated BeadWatch's capability to detect subtle, previously undocumented performance patterns.

Conclusions:

• BeadWatch offers an automated, efficient solution for QC monitoring in HLA antibody testing.
• The application enhances the detection of gradual performance degradation and operational errors.
• BeadWatch supports adherence to international laboratory standards and improves overall testing quality.