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[Evaluation of the System 9000-AX autoanalyzer]
G Las Heras1, F Millá, J M Ribera
1Servicio de Hematología y Hematerapia, Hospital Universitario Germans Trias i Pujol, Barcelona.
Sangre
|April 1, 1993
Summary
The System 9000 AX haematologic autoanalyser demonstrates excellent accuracy and precision for red, white, and platelet cell counts. It offers reliable automated differential counts, proving a fast and user-friendly tool for laboratory diagnostics.
Area of Science:
- Clinical laboratory science
- Hematology automation
- Diagnostic technology evaluation
Background:
- Automated haematology analysers are crucial for efficient and accurate blood cell counting.
- The System 9000 AX offers 15 parameters and cellular distribution histograms.
- Evaluating new analysers is essential for laboratory quality improvement.
Purpose of the Study:
- To assess the performance of the System 9000 AX haematologic autoanalyser.
- To evaluate its accuracy, precision, linearity, and carry-over.
- To analyze the automated leucocyte differential count (LDC) performance.
Main Methods:
- The System 9000 AX was evaluated for accuracy, precision, linearity, carry-over, speed, and sample stability.
- Leucocyte differential counts (LDC) were compared against manual methods and a Coulter VCS analyser.
- Sensitivity, specificity, and efficiency of the automated LDC were analyzed.
Main Results:
- The System 9000 AX showed very good accuracy for all haematologic series.
- Automated LDC performance was superior for middle and big cells compared to manual methods.
- High sensitivity, specificity, and efficiency (>80%) were observed, with some limitations in hospitalized patients due to false negatives.
Conclusions:
- The System 9000 AX is a reliable, fast, and easy-to-operate haematologic autoanalyser.
- Its performance makes it a valuable tool for laboratories needing rapid sample testing.
- The analyser provides accurate results and efficient LDC, supporting clinical decision-making.