You can&#x27;t argue that one failure to achieve accurate results mean that it&#x27;s inherently impossible to achieve accurate results.<p>In this case, it&#x27;s conceivable that there could be a tip geometry, tip composition, cleaning technique, normalizing strategy, prick location&#x2F;depth, etc (or combination of the above) that leads to good data. Of course, that&#x27;s not a guarantee that it <i>is</i> possible, and it still puts the burden of proof on Theranos (for example) to prove that they have actually overcome this problem if they want to run tests that way.<p>It <i>is</i> mighty suggestive though.