Abstract
Despite recent advances in genetic technologies that are making invasive prenatal diagnosis less common, amniocentesis and chorionic villus sampling (CVS) remain an integral part of prenatal care. A multitude of tests, including a variety of genetic tests, can be performed using samples collected from either procedure. Although invasive testing has limitations, many genetic conditions can only be diagnosed through invasive techniques during pregnancy. Invasive testing continues to assist patients and providers in making informed decisions regarding the care of pregnancies. This review details amniocentesis and chorionic villus sampling with a focus on genetic testing, describing why the tests are performed, the way in which they are performed, and the associated limitations and complications of the procedures. This review 5 figures, 3 tables, and 26 references. Keywords: prenatal diagnosis, amniocentesis, chorionic villus sampling, genetic testing, genetic counseling, invasive prenatal testing, pregnancy, aneuploidy
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