A TEST to reveal whether a fetus has Down’s syndrome from just a drop of its mother’s blood has hit a snag. A panel set up by Sequenom of San Diego, California, to investigate the firm’s seemingly rosy research results has found they contain .
Prenatal Down’s tests typically involve using a needle to draw fluid from the mother’s womb. This carries a small risk of miscarriage. In September 2008, Sequenom said that its test, which dodges this risk as it relies on fetal RNA in the mother’s blood, would be ready by…
