Down Syndrome
razib | February 24, 2009New Safety, New Concerns In Tests for Down Syndrome:
The new tests take advantage of techniques that can isolate and analyze tiny bits of genetic information from the fetus that circulate in a woman's bloodstream, in this case from cells or free-floating snippets of DNA or the related molecule RNA.
At least four companies are developing such tests, including Sequenom of San Diego, which plans to be the first on the market in June. The other companies hope to have their versions on the market within a year.
"For 50 years, folks have been working to develop a noninvasive genetic test for Down…