Editorial: Science takes some stress off would-be parents

2019-03-01 06:08:04

OUR knowledge of the genetics of the unborn child has taken a big step forward. A risk-free test for Down’s syndrome is now a realistic prospect, thanks to technology that allows us to analyse traces of fetal RNA and DNA in maternal blood (see “Blood tests could eliminate Down’s miscarriage risk”). Eventually many abnormalities could be spotted at 10 weeks, or even earlier, without risk of miscarriage. The blood test is safe enough to be used for screening,