There's no such thing as human grade LR3-IGF. Gropep holds the patent on it and won't sell it to individuals, only verified research facilities, institutes or academic associations. There are some places that sell "Gropep" as their IGF, although I'm not sure how you could even verify that, more like marketing BS. As WW said, IGF isn't something that you should lightly be playing around with. I'm certainly no expert but I've done an immense amount of research on it and currently am running it with pegMGF.