Table 2: Number and percentage of inborn errors of metabolism in a population of children born with inborn errors of metabolism from 2006 to 2009 in the neonatology section, Maternity Hospital, Al Ahsa, Eastern Region, Saudi Arabia
		Total confirmed cases of metabolic errors
No of Screened Live births	Confirmed Cases	Type	No	%
37168	426	3-methylcrotonyl-CoA carboxylase   (3 –MCC)	13	20.63
		Biotinidaze deficiency	12	19.05
		Medium Chain acyl Coenzyme A Dehydrogenase (MCAD)	5	7.94
		Glutaric Aciduria	1	1.59
		Glutaric Academia type 2	4	6.35
		Probionic Acidemia	1	1.59
		Homocysteinuria	2	3.17
		Primary Carnitin deficiency	1	1.59
		Nonketotic hyperglycinaemia (NKH)	2	3.17
		Galactosemia	2	3.17
		Phenyl Ketonuria (PKU)	1	1.59
		Methylmalonic acidaemia (MMA)	2	3.17
		Multiple corboxylase deficiency	1	1.59
		Citrulinemia	1	1.59
		Hypothyroidism	12	19.05
		Congenital adrenal hyperplasia (CAH)	3	4.76
37168	63 (0.17%)