A PI*MS is not always a PI*MS. An example of when genotyping for alpha-1 antitrypsin deficiency is necessary T. Martín; M. Miravitlles; S.T. Furtado;

Alpha-1 antitrypsin deficiency in Madeira Island: The first null variant and the contribution of deficient genotypes Ana Sara Gonçalves; João Carvalho; Cláudia Sousa; Susana Seixas; Vítor Teixeira;

Alpha-1-antitrypsin deficiency caused by a PI*ZQ0Leiria genotype- the importance of diagnosis algorithms M.J.V. Silva; S. Seixas; M.J. Canotilho; S. Feijó;