What they got instead was the announcement of a brand new device different from its old Edison machine. WSJ's sources said Theranos barely used Edison, because the results it produced weren't always accurate. But just like Edison, the miniLab was also designed to test for a variety of illnesses, including Zika, using just a drop of blood. Holmes said the machine is even capable of detecting additional strains of the Zika virus. Many attendees were obviously skeptical of the new machine -- "I certainly didn't see anything that lives up to the expansive claims they made," one pathologist told Bloomberg -- but the CEO said Theranos already submitted the new device to the FDA for approval.