Affiliation:
1. Pathology Department, Lilly Research Laboratories Eli Lilly and Company, Lilly Corporate Center Indianapolis Indiana USA
2. Global Statistics Department, Lilly Research Laboratories Eli Lilly and Company, Lilly Corporate Center Indianapolis Indiana USA
Abstract
AbstractBackgroundThe Sysmex XN‐1000V automated hematology analyzer with multispecies software was released in June 2017 for use in research laboratories. Laser light, impedance, fluorescent staining, and fluorescent flow cytometry are used to analyze whole blood for CBC, reticulocyte counts, and WBC counts, including a 5‐part differential leukocyte analysis.ObjectivesA side‐by‐side comparison of the Sysmex XN‐1000V with the Siemens ADVIA 120 in analyzing blood from healthy mice and rats will provide insight into the performance of the new analyzer and its capabilities for use in drug development studies. Method correlation analyses on normal mouse and rat hematology data collected with both analyzers and manual reference methods will help determine the reliability of the data produced using the Sysmex XN‐1000V analyzer.MethodsWhole blood samples collected in K2EDTA from healthy CD‐1 mice and CD Sprague–Dawley rats were analyzed in parallel with the XN‐1000V and ADVIA 120 analyzers. Male and female mice, approximately 6–9 weeks old, and male and female rats, approximately 7–9 weeks old, were included in this study. Manual reference methods for WBC differential leukocyte analysis and packed cell volume (PCV) measurements were also performed. EP Evaluator version 11.2 (Data Innovations LLC, South Burlington, VT, USA) was used for method comparison statistical analysis.ResultsMost hematologic parameters for naïve mice and rats achieved correlation in the fair to excellent range, with the majority showing very good to excellent correlation with low biases (<11.0%) for cohorts analyzed separately and when cohort data were combined.ConclusionsThe Sysmex XN‐1000V Hematology Analyzer provided comparable results to those obtained from the Siemens ADVIA 120. We found the Sysmex XN‐1000V Hematology Analyzer to be acceptable for use in drug development studies for rats and mice.