Fifteen years of external quality assessment in leukemia/lymphoma immunophenotyping in The Netherlands and Belgium: A way forward

In 1985, external quality assurance was initiated in the Netherlands to reduce the between‐laboratory variability of leukemia/lymphoma immunophenotyping and to improve diagnostic conclusions. This program consisted of regular distributions of test samples followed by biannual plenary participant meetings in which results were presented and discussed. A scoring system was developed in which the quality of results was rated by systematically reviewing the pre‐analytical, analytical, and post‐analytical assay stages using three scores, i.e., correct (A), minor fault (B), and major fault (C). Here... Mehr ...