The Los Angeles Times this week reports on a new UnitedHealth Group study that "estimates spending on genetic tests at $5 billion in the US in 2010," adding that it "could reach $25 billion within a decade." The LA Times says that the increasing availability of genetic tests and molecular diagnostics "offers the promise of earlier detection of disease and more personalized treatments that could wring substantial savings from the nation's $2.6 trillion-a-year healthcar