Fetal ultrasounds in: the 1st & 2nd trimesters can show anatomical signs frequently seen in fetuses with Down Syndrome or other genetic accidents that result in 3 copies of a specific chromosome.Knowing your risk of DS, calculated by FUS findings, gestational & maternal age, 1st & 2nd trimester maternal blood screens, & a higher-resolution FUS, helps you decide if you want chromosomal testing for a definitive answer.
Answered 3/30/2015
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