Right, I was gonna say, usually if you get laced pot, the dealer will tell you, and charge you more, because whatever you lace the pot with costs money. It would be really dumb for a dealer to lace pot with something without telling you, unless he was trying to kill you or something.

You also shouldn't ever have to worry about that kind of stuff. If you're going out on the street and buying from whoever you can find, you're doing it wrong. You should have a dedicated dealer that you know and trust.