How is Cystic Fibrosis Diagnosed?

In March 2006, the Minnesota Department of Health added cystic fibrosis (CF) to the list of disorders tested for in its newborn screening program. At Children's, one or more of the following tests may diagnose CF:

Sweat Test

A painless test in which sweat is collected from the skin and analyzed for salt content. Results are usually available the same day. Some newborns do not produce enough sweat on the first attempt and the test is repeated later. Our CF Newborn Screening page provides more information about understanding sweat test results. Our Laboratory Services page also provides more information about what to expect from a sweat test, and to schedule a sweat test at Children's.

Genetic Testing

A blood sample is sent to a special lab for genetic testing. Results may take several days to one month. See our CF page for more information about genetic disease.

Newborn Screening

Blood taken from a heel prick after birth tests for the most common gene mutations of CF. Our CF Newborn Screening page provides more information about what to expect.