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Chorionic Villus Sampling
Health Encyclopedia: Chorionic Villus Sampling
Chorionic villus sampling (CVS) is the removal of a small piece of tissue (chorionic villi) from the uterus during early pregnancy to screen the baby for genetic defects.
How the test is performed
Depending on where the placenta is located, CVS can be performed through the cervix (transcervical) or through the abdomen (transabdominal). The techniques are thought to be equally safe and effective for obtaining samples. Both the transcervical and the transabdominal CVS ...
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Health Guide
Chorionic villus sampling
What the risks are The risks of CVS are only slightly higher than those of an amniocentesis. Fetal loss occurs about 2% of the time. Possible complications include the following: ... Read more »Chorionic villus sampling
Normal Values Normal values would indicate an absence of congenital defects. What abnormal results mean Analysis of the biopsy may indicate any of more than 200 disorders, including... Read more »Osteogenesis imperfecta
...a DNA blood test. Pregnant women may have a DNA test done using prenatal chorionic villus samples (CVS) to diagnose the baby before it is born. Severe OI can be seen on ultrasound when the fetus... Read more »Chronic granulomatous disease
...family history of chronic granulomatous disease. Advances in genetic screening, and increasing use of chorionic villus sampling, have made early recognition of chronic granulomatous disease... Read more »Adrenoleukodystrophy
...Intrauterine diagnosis of adrenoleukodystrophy is available and done by evaluation of cells from chorionic villus sampling or from amniotic cells ( amniocentesis ). Read more »Images
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