ONR...dude, I like your work...I really do...but you're just not getting it...how much experience do you have in the field of biotechnology? You can detect literally ANYTHING if you have the correct parameters. If we can start utilizing biotech in drug testing, we can use things like tagged antibodies to isolate the smallest of particles and use polymerase chain reactions to amplify them to see exactly what they are...as long as you know what the substance is, you can find the surface molecules to detect certain membrane-bound proteins. You can then create antibodies to attach to those membrane-bound proteins to isolate the particle and then use PCR to amplify it to see exactly what it is...biotechnology is an amazing field that is growing in both application and popularity in the science world...don't get me wrong, I'm not trying to bash anyone or insult their intelligence, I'm just saying that companies like Ceres Nanosciences are making great strides in developing tests like these...so, using biotech methods, YOU CAN TEST FOR ANYTHING...trust me
