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Diagnosis

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doctor with adult CF patient

Most individuals with cystic fibrosis (CF) are diagnosed early in life. Cystic fibrosis can be diagnosed through prenatal or newborn screening before symptoms develop. All infants born in the United States and in many countries around the world are screened for CF shortly after birth. However, many individuals still are diagnosed later in life because of recurrent respiratory problems and gastrointestinal problems such as difficulty gaining weight and abnormal stools. Some individuals with CF have “atypical” presentations that involve milder or fewer symptoms. Two-thirds of children with CF are diagnosed by the time they turn one year old. However, the diagnosis can be made at any age, from the newborn period into adulthood.