Well, you can do a 12 panel test to pick up the most common drugs of abuse. You would need to see a doctor to have blood drawn to be tested to rule out benzo use.
You would want to see a positive for therapeutic levels of Zoloft, combined with no benzos. Hopefully @Darkwing Psyduck will show up on this as my "wild child days" were in the 70s. I'm pretty up on "pharms", but know next to nothing about research chemicals and the like.
I think Darkwing, being so newly sober, would be closer to the scene as it is now, or at least how it was a couple of years ago.
Darkwing, could you help kt4394 out with this? (Only if it isn't triggering.)
The drug that worries me is "molly" or MDMA, which has a nasty come down. There's also meth, which has an awful comedown and Adderal, where the comedown is milder, but still no fun.
All of these drugs, when crashing, cause anger, irritability, depression, cravings for more of the drugs and in the case of Meth, severe paranoia and psychosis. Users of meth and adderall, especially, will use high doses of benzos to finally get to sleep after being up for multiple days on a "speed run" (term from the dark ages).