Cystic fibrosis is a multisystem disease which was thought to be rare in India, but published reports indicate it to be more prevalent as the disease is underdiagnosed or missed in the majority of cases. Cystic fibrosis usually presents in infancy & in 10- 20% of cases, the symptoms appear soon after birth. Immunoreactive trypsinogen (IRT) is used to screen newborns for increased risk of Cystic fibrosis
