October 15, 2015 | The Wall Street Journal today reported that Silicon Valley lab Theranos, led by Elizabeth Holmes, is valued at $9 billion but isn't using its technology for all the tests it offers. WSJ quoted several former employees of Theranos that raised questions about the way Theranos conducted their blood tests, whether or not Theranos was using proprietary technology for its tests, and whether the Theranos technology was accurate. In response to the article, Theranos released a statement saying the company had presented facts to WSJ to prove its test accuracy, but the Journal chose not to publish those supplied facts. Wall Street Journal article; Theranos statement
Update: Matthew Herper at Forbes weighs in on both the WSJ article and the Theranos response. It's time, he says, for Theranos to "stop complaining and answer questions."