Validation rules for blood smear revision after automated hematological testing using Mindray CAL-8000

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Abstract

Background: This article was aimed to test the use of validation rules for blood smear review after automated hematological testing using Mindray CAL-8000 (two hematological analyzers and one autoslider). Methods: This study was based on 1013 peripheral blood samples (PB) referred for routine hematological testing. Results of testing on CAL-8000 were analyzed using both locally derived and International Consensus Group for Hematology (ICGH) validation rules, and then compared with data obtained by optical microscopy (OM). A workflow analysis was also completed. Results: The overall agreement with locally derived and ICGH criteria was 91% and 85%, but a higher sensitivity was observed for locally derived criteria (0.97 vs 0.95). The percentage of false negative and false positive samples was 2.1% and 7.1% using ICGH criteria, and was 1.4% and 14% using locally defined rules. The throughput of CAL-8000 system was 208 samples/h, with a percentage of OM analysis comprised between 14% and 17%, and sensitivity of 0.97. As regards personnel activity, we estimated 0.8 full-time equivalent (FTE) of technical staff and 0.7 FTE of personnel for clinical validation of data and blood smear review. Conclusion: These results show that customization of validation rules is necessary for enhancing the quality of hematological testing and optimizing workflow.

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Buoro, S., Mecca, T., Seghezzi, M., Manenti, B., Azzarà, G., Ottomano, C., & Lippi, G. (2017). Validation rules for blood smear revision after automated hematological testing using Mindray CAL-8000. Journal of Clinical Laboratory Analysis, 31(4). https://doi.org/10.1002/jcla.22067

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