The purpose of CF carrier testing is to see if a couple is at increased risk for giving birth to a child who will have CF. Cystic Fibrosis carrier testing is a laboratory test done on a sample of blood or saliva. If testing shows that a couple is at high risk, additional testing can be done on the developing baby to see whether or not it will have CF. However, most women’s test results are normal. Cystic Fibrosis can not be treated before birth. The purpose of having this information about your developing baby is so you can prepare yourself to care for a child with special health care needs or so you can terminate the pregnancy.