I totally totally totally agree.
And I have personal experience of an untested pill. Happened to a friend of mine.
Was asked to wait to get it tested, got impatient, dropped it, and me and my 3 mates got to spend 3-4 hours nursing him back to sanity from a pit of paranoia.
Was horrible to watch. I mean I do not regret helping him, we have to look out for each other, but if your not going to take care of yourself, then your diceing with danger.
Play hard, but play SAFE.
The good news is that we won our lil battle and by the end of the night he was back dancing and laughing again, but the shaking, shivering, crying, convulsing beforehand...