“…One of the reviews ÔNewborn screening for inborn errors of metabolism: a systematic reviewÕ applied the Wilson and Junger criteria to a number of inborn errors which included PKU, maple syrup urine disease, homocystinuria, tyrosinaemia type 1, galactosaemia, methylmalonic acidaemia, propionic acidaemia, isovaleric acidaemia, glutaric aciduria type 1, hydroxymethylglutaric aciduria, mitochondrial respiratory chain disorders, medium-chain acyl-CoA dehydrogenase (MCAD) deficiency, long-chain fatty acid oxidation disorders, multiple acyl-CoA dehydrogenase deficiency, congenital adrenal hyperplasia, familial hypercholesterolaemia, peroxisomal disorders, urea cycle disorders, biotinidase deficiency, Wilson disease, molybdenum co-factor deficiency, disorders of purine and pyrimidine metabolism and lysosomal storage disorders [7]. On the basis of this assessment, the review concluded that universal neonatal screening for PKU is worthwhile and should be continued, that national programmes for profound biotinidase deficiency and congenital adrenal hyperplasia are justified, and that screening should be seriously considered for MCAD and glutaric aciduria type 1.…”