Automated cerebrospinal fluid cytology
Tanja Heller1, Ingelore Nagel, Bettina Ehrlich
1Department of Clinical Chemistry, University of Göttingen, Göttingen, Germany.
Analytical and Quantitative Cytology and Histology
|July 18, 2008
Summary
The Abbott CELL-DYN Sapphire shows good correlation for cerebrospinal fluid (CSF) total cell counts, but differentiation accuracy varies for specific cell types. Its performance is comparable to the Bayer Advia 120.
Area of Science:
- Clinical Chemistry
- Hematology
- Medical Diagnostics
Background:
- Accurate cerebrospinal fluid (CSF) cell analysis is crucial for diagnosing neurological conditions.
- Automated cell counters offer potential for improved efficiency and standardization in CSF analysis.
Purpose of the Study:
- To evaluate the performance of the Abbott CELL-DYN Sapphire automated analyzer for CSF cell enumeration and differentiation.
- To compare the CELL-DYN Sapphire's CSF analysis results with conventional laboratory methods.
Main Methods:
- One hundred three CSF samples were analyzed using the Abbott CELL-DYN Sapphire.
- Results were compared against routine cell counting and manual microscopic differentiation.
- Correlation coefficients were calculated to assess agreement between methods.
Main Results:
- Strong correlation was observed for total CSF cell counts between the CELL-DYN Sapphire and manual methods.
- Erythrocyte detection showed good correlation (r=0.898).
- Correlation for leukocyte counts was highest at >25/microL (r=0.987) but less precise at <25/microL (r=0.613).
- Moderate correlation was found for lymphocyte and neutrophil differentiation; monocytes and eosinophils showed no correlation.
Conclusions:
- The Abbott CELL-DYN Sapphire provides reliable total CSF cell counts, comparable to the Bayer Advia 120.
- The instrument demonstrated good performance for erythrocyte detection and total cell counts, especially with higher erythrocyte levels.
- Cell differentiation accuracy, particularly for lymphocytes and neutrophils, requires further investigation, with performance varying compared to other automated systems.
