Reguengos, JoãoFaria, Ana PaulaMiranda, ArmandinaCorreia, HelenaCardoso, AnaSilva, SusanaRequeijo, José2018-02-262018-02-262017-10http://hdl.handle.net/10400.18/5070Glucose quantification plays a key role in the Diabetes diagnosis and treatment monitoring. In Portugal diabetes prevalence is increasing and last estimates provide a prevalence of 9,8%(1). The main objective of this study was to evaluate the Sigma level of the participant laboratories of the Clinical Chemistry program of PNAEQ (2014-2016) regarding the Glucose quantification, through two different approaches: by applying a linear regression model which enables performance evaluation of each laboratory individually over time(2); and by evaluating the general performance of all laboratories on each sample.engAvaliação Externa da QualidadeAEQPrograma Nacional de Avaliação Externa da QualidadePNAEQ6 sigmaglucoseconference object