Tag: trisomy
Prenatal Screening Tests for Chromosome Abnormalities
Science has made remarkable advances in prenatal screening, but false positives and false negative results can occur, and there are ethical concerns.
Baby’s DNA in Mom’s Blood: Noninvasive Prenatal Testing
Until recently, the moment of birth was a surprise. We anxiously awaited the obstetrician’s announcement: “It’s a boy!” or “It’s a girl!” Then we checked to see if any crucial parts were missing and we counted the fingers and toes. We had to wait for a baby to be born before we could know its sex and whether it was normal. Today,...