Mary Norton, an expert on maternal-fetal medicine and genetics at the University of California, San Francisco. "Those of us in the field who do diagnostic procedures like CVS and amnio have seen a drastic decrease in the number of those procedures that are being performed," says Dr. Shots - Health News More Women Skip Some Prenatal Tests After Learning About Risks Insurance coverage varies, and doctors often only offer this testing to women at higher risk because of things like advanced maternal age. Several companies now offer the test, including Sequenom and Illumina. It's only been on the market since October 2011 and is not regulated by the Food and Drug Administration - the FDA does not regulate this type of genetic testing service. This kind of test, called cell free fetal DNA testing, uses a simple blood sample from an expectant mother to analyze bits of fetal DNA that have leaked into her bloodstream. She wanted to be screened, and she knew just what kind of screening she wanted - a test that's so new, some women and doctors don't quite realize what they've signed up for. When Amy Seitz got pregnant with her second child last year, she knew that being 35 years old meant there was an increased chance of chromosomal disorders like Down syndrome. It's just one of several prenatal screenings available to pregnant women. Ultrasound is often used for prenatal screening.
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