The aim of this Special Issue of the International Journal of Neonatal Screening on Newborn Screening for Congenital Adrenal Hyperplasia (CAH) is to describe the current state of CAH newborn screening around the world, with a focus on efforts to find solutions to obstacles and on successful strategies to improve the efficiency of CAH screening. It provides insight into the dilemma of optimal timing for specimen collection, successful strategies to reduce the relatively high screening false positive rate, as well as strategies to address limitations in clinical follow-up and the availability of treatment.
