A DNA blood test can identify carriers of the most common CF gene mutations. There are many CF gene mutations, most of them rare, which cannot be detected in routine testing. Because there are many gene mutations that cause CF, testing is most reliable if the specific mutations are known for the affected relative. Even if the mutations are not known, carrier testing may be performed. Carrier tests may be completed within one to three weeks.
Prenatal tests take approximately three weeks.
Individuals who are concerned about the risk of carrying the CF gene are encouraged to discuss genetic testing with their physicians and to consider having genetic counseling. During counseling, a detailed family history will be reviewed and appropriate testing determined for each individual situation. Call for information.