Diagnosis is established by high blood levels of galactose, normal activity of the enzyme galactose-1-phosphate uridyltransferase and reduced or no activity of<unk>  in RBCs.
Galactokinase deficiency
Hexokinase deficiency
Galactose epimerase deficiency
Enolase deficiency
Glutaminase deficiency
Ornithine aminotransferase deficiency
Malonyl-CoA decarboxylase deficiency
Pyruvate kinase deficiency