RT @JohnCarreyrou: Study: @theranos cholesterol results differ from Quest and LabCorp enough to throw off doctors' medical decisions http://on.wsj.com/1ohBCJY
Always aware of margin of error, but scary to believe that it could be so wrong and affect medication dosages: http://www.wsj.com/articles/theranos-has-struggled-with-blood-tests-1444881901