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Results
By Mayo Clinic staffYour health care provider or a genetic counselor will help you understand your chorionic villus sampling results.
Most test results are normal, which can ease anxiety about your baby's health. Sometimes a follow-up ultrasound is recommended several days after chorionic villus sampling to verify the baby's well-being. Occasionally, test results are unclear and amniocentesis is needed to clarify the diagnosis.
With chorionic villus sampling, there's a rare chance of a false-positive test — when the test is positive, but no disease exists. It's also important to remember that chorionic villus sampling can't identify all birth defects, including spina bifida and other neural tube defects.
If chorionic villus sampling indicates that your baby has a chromosomal problem or a genetic disorder that can't be treated, you may be faced with wrenching decisions — such as whether to continue the pregnancy. Seek support from your health care team, your loved ones and other close contacts during this difficult time.
