Anaheim: Down Syndrome - Three "Screening Tests" Are the First Step in Diagnosing Down Syndrome

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Doctors can make a Down syndrome diagnosis for a baby while the mother is still pregnant. Down syndrome is caused by the presence of an extra 21st chromosome in the baby.Babies that don"t have Down syndrome have two 21st chromosomes and babies with Down syndrome normally have three ... read more: Down Syndrome - Three "Screening Tests" Are the First Step in Diagnosing Down Syndrome