Sigma Metric Analysis
We highlight a poster from the 2005 AACC/ASCLS/IFCC conference, "Evaluation of the Beckman Coulter UniCel DxC 800 Synchron Clinical System", (H. Stiegler, A. Breuer, A. Pozun, M. Krieg). The data provided in this evaluation can be converted into Sigma metrics.
We analyze some data from the field and look at performance in the Roche Modular instrument.
An analysis of the Sysmex SE-9500
This is a rare opportunity: to analyze multiple performance studies on a single instrument. By looking back through two scientific journals, we were able to find studies around the world that describe the performance of the Sysmex XT 2000i.
A frequent visitor to Westgard Web, Mary McDermott MT(ASCP), shared with us her performance data on the Beckman Coulter HMX hematology instrument. Data was collected for three controls, one lot each. No bias data was available, so the resulting metrics are provisional and incomplete. However, it is possible to calculate the allowable bias for specific levels of Sigma performance.