The only true way to get an accurate reading would be to turn the whole thing into liquid and shake really well and measure it that way. The bad thing doing it this way is that it would go bad quick. Meaning bacteria would start growing. It might keep for a couple days in the fridge. The above is assuming that he's accurate on his dosing and there is 10mg (or less) if by accident there was more, then you could be screwed. Im sure he knows what he is doing and is careful. Don't mess with this stuff unless you really know what you are doing. Not just think you know...