The International Journal of Neonatal Screening (IJNS) is the official journal of the International Society for Neonatal Screening (ISNS). IJNS is also the official journal of the German Society for Neonatal Screening (DGNS). IJNS aims to improve the knowledge of the natural course of target diseases for newborn screening, as well as the knowledge about methods used in newborn screening laboratories. IJNS also seeks to improve the communication between newborn screening laboratories worldwide, and to distribute technical notes and improvement of existing screening methods and assays. IJNS is a peer-reviewed open access online journal, which will serve as the unique and universal platform for all newborn screening relevant topics of interest to: pediatricians specialised in inborn errors of metabolism, pediatric endocrinologists, pediatric pneumologists, pediatric immunologists, clinical chemists, biochemists, molecular biologists, geneticists, genetic counselors, neonatologists, public health authorities & specialists.