3 ) laboratory diagnostic tests presently used in our country : dosage of some genetic markers ( arylsulfatases , hexosaminidases , beta-glycosidase ; beta-galactosidase and sphingomyelinase ) , newborn populational screening ( for hyperphenylalaninemia , and hypothyroidism ) , heterozygote detection ( for tay-sachs disease ) and also some prenatal diagnosis ;
C0019484
hexosaminidases
C0017976
glycosidase