What is my risk of being a fragile X carrier?
Your chances of being a fragile X carrier depend on your family history. If you have a family history of fragile X syndrome or of mental retardation from an unknown cause, you might be a fragile X carrier. Should you or your future child be tested for fragile X? If you are pregnant and a fragile X carrier, you may want to have a prenatal test for fragile X syndrome. Fragile X testing also should be considered for anyone who has a chromosome test that shows fragile X. The chromosome test is no longer performed routinely, but if someone in your family was positive for this test in the past, that family member should consider DNA testing to confirm the results. Should a child with mental retardation be tested for fragile X? Fragile X testing should be considered for any child who has been diagnosed with mental retardation, developmental delay or autism. This is especially true if there is a family history of fragile X or some other form of mental retardation from an unknown cause, or if t
