just from my experience, here is what i have found from a few bunk rolls...
one time, i ate a blue diamond, and very shortly after got jittery, irritated and what id describe as being tweaked out. definately meth, but then i got super dissasociated and out of it, definately some ket too. checked reports later and sure enough, both were in there.
ive also had white motorolas which were cut with mda. most people ive talked to and reports ive read claim them to be cut with LSD, but they are not. i have a lot of experience with LSD and the effects were not the same. MDA made me feel similar to rolling, but with a much much much harder peak (first wave/roll) and up to 7 hours later, i was still seeing trails on lights, as well as slight amplification of CFL light flickering.
just some random input that may help out.