Salvinorin A is not water soluble. As for the tests, it is legal anyway. It doesn't result in a false positive for any of the DA-5, and Salvinorin A doesn't incriminate you. As for GC and such; you have to be in some serious shit if someone spends the money on chromatography. I have never seen someone get GC for drugs at my lab or hospital in 4 years outside of comprehensive toxicology screens done usually either postmortem or right before you die trying to save you.