The problem w/ Theranos was that at first glance everything about it was physically too small. A single drop of blood is too little, the cost of running the tests was too low - to do all of the separate tests it was supposed to be able to do and still be within the realm of the possible.

The Toshiba machine doing one type of test from one drop of blood at a cost of ~$184 is well within the range of what should be possible in the real world.