Chorionic villi sampling


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Related to Chorionic villi sampling: percutaneous umbilical blood sampling, nuchal translucency

Chorionic villi sampling

A procedure to remove a small tissue sample of the placenta, the sac that surrounds the developing fetus. This test can be performed as early as week 10 of the pregnancy. The tissue can be tested for genetic defects.
Mentioned in: Lipidoses
References in periodicals archive ?
In some instances, chorionic villi sampling may do more harm than good.
Patients can have chorionic villi sampling (CVS) at 10-12 weeks or an earlier amniocentesis.
While the test still is under development, if proven effective, it could provide noninvasive, earlier prenatal screening and possibly eliminate the need for amniocentesis and chorionic villi sampling (CVS).
They are useful only for assisting in a decision as to whether or not to perform amniocentesis or chorionic villi sampling.
Prenatal diagnosis for all of these diseases is possible through amniotic fluid or chorionic villi sampling when both parents are carriers.
Eng and her associates discovered that there was a 71% acceptance rate of CMA among couples in which the woman was undergoing amniocentesis or chorionic villi sampling (CVS).