Could a child under 2 be diagnosed with cystic fibrosis?

Yes: Yes. Cystic fibrosis can be diagnosed that early and earlier.

Yes: All 50 states now have newborn screening for cystic fibrosis. Newborn screening should identify over 95% of infants with cystic fibrosis. An abnormal sweat test or genetic testing showing 2 mutations are the most common tests to confirm the diagnosis of cf. The earlier comprehensive care is started at a CF center (www.Cff.Org) the better the outcome.

Yes: CF is an inherited disorder that requires 2 mutations (1 from mother & 1 from father) to lead to the clinical disease. If you have it, you were born with it. Many states in the U.S. Perform newborn screening that can pick the disease up at birth, but it can go undiagnosed for years in some cases.