G6PD and congenital adrenal hyperplasia: Neonatal or newborn screening (NBS) for a series of disorders such as phenylketonuria (PKU), congenital hypothyroidism (CH), glucose-6-phosphate dehydrogenase (G6PD) deficiency and congenital adrenal hyperplasia (CAH) is widely used in most developed and some developing countries [1].