With fetal DNA, researchers cannot only test for gender, but the presence of genetic diseases as well. While testing for fetal anomalies through a maternal blood sample will not be able to replace current testing protocols like amniocentesis in the near future. They may, however, be able to identify high-risk pregnancies who really need further testing. Again, fetal DNA testing would keep countless women from undergoing unnecessary and invasive testing.
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Doheny, K. (2011, August 09). Boy or girl? fetal dna tests often spot on. Retrieved from http://www.webmd.com/baby/news/20110809/will-it-be-a-boy-or-girl-fetal-dna-tests-often-spot-on?page=2