My baby had a positive newborn screen for CF:

It is important to know that most babies who screen positive for cystic fibrosis (CF) do not have it.

Before you took your newborn baby home from the hospital, a small amount of blood was taken from his or her foot as part of Ohio’s Newborn Screening Program. One of your baby’s test results showed a need for a second test called a sweat test.

If you had a negative CF blood test when you were pregnant, but your baby’s newborn screening was positive for CF, your baby should still have a sweat test. The CF carrier testing available to parents during pregnancy cannot rule out the possibility that their baby could have CF.