[cowsandmilk]

Looking at some details on the technology, I would have to disagree. Nanodiamonds seem to be a much better fluorescent label than what is traditionally conjugated to antibodies. Traditional conjugated fluorophores have high susceptibility to bleaching, so you have to sort them out from natural signals. With nanodiamonds, it appears you can bleach all the natural signals and get a clear signal from the nanodiamond. This is pretty cool.

[untilHellbanned]

You missed the point. Detecting the protein or whatever that is deregulated in disease early is the hard part, not the fluorophore or nanoparticle to which it conjugates.