There is ONLY real lsd from the people I talk to. He would be ashamed to sell anything as lsd that is not lsd.
Case in point:
My guy bought a vial of liquid "lsd" from a new contact and tried dosing his own sheets. They came out really really good, only problem was that it seemed to take a lot (3-4 hits) when 2 should have been plenty. He knows I know a lot about this kinda thing. Since he was concerned, he gave me 10 FREE hits to check them out. I decided that after trying it, it was probably LSA. He went and got a a test kit, found out it was LSA, and gave me 3 free hits the next time, threw away the remaining 80 or so hits of LSA blotter he made, told his new contact to not talk to him again, went back to his original guy.
If my friend has any questions on what something is, I'm usually forced (OK... I love this part really and am not forced at all lol) to take a couple hits free of charge. This includes seeing how potent something is, trying a different way of dosing (sublingually for me, he will usually insnuffulate it so we get two opinions on dosage strength.
I have one other guy who has lsd, but he's only offered to sell me crystal or vials of liquid lsd.