Unapproved tests on a chip

摘要

For more than a decade, genetic tests have been on the way that would tell patients about genetic variations that might increase their susceptibility to disease. And all the while, bioethicists have been warning the US government of the impending need to regulate such tests when they arrive. Now hundreds of these tests are available, including powerful prenatal tests that use microarrays to scan hundreds of genes in unborn children. Yet despite the warnings, the tests remain effectively unregulated.