Ovelheiro, Ana RaquelMiranda, ArmandinaCorreia, HelenaCardoso, AnaFaria, Ana PaulaGomes Requeijo, José2019-03-042019-03-042018-10http://hdl.handle.net/10400.18/6054The hemogram is one of the most frequently requested laboratory tests, in hospital and ambulatory. It is important in the evaluation of anemia, polycythemia, leukemia, infection, inflammation, among others. The main objective of this work was to evaluate the Sigma quality level of the clinical laboratories participating in PNAEQ’s EQA Blood Cell Count program (2015-2017) referring to the parameters hemoglobin, platelets, leukocytes and erythrocytes. For this study, Six Sigma was used as methodology and metrics, supported by the application of the DMAIC (Define, Measure, Analyze, Improve, Control) cycle.engAvaliação Externa da QualidadeAEQPrograma Nacional de Avaliação Externa da QualidadePNAEQSix sigmaBlood Cell CountHematologiaHemogramaconference object