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In which case, it wouldn't be done through a drop of blood, as Theranos advertised. It will be done through those undiscovered "magical" means (in the sufficiently advanced levels of technology are akin to magic manner of speaking) that currently elude our understanding both technical and theoretical.

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It doesn't matter how it's done. When they promise a drop of blood, what they promise is not drop of blood but a value associated with being able to do these test from drop of blood. If similar value can be delivered through other means, it would be fine. Not drop of a blood but saliva and breathing analysis? Just as good.

Blood test nerds can be disappointed, of course. I doubt that the core audience are the blood test aficionado, but you can always make them happy by saying "We are confident that the test can be done through single drop of blood in 2 years".

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