Jano has said that he can identify 191 vs 192 (I think just with HPLC? Don't know specifically how but I know he said he can easily), he has also said, contrary to Cummins, that 192 is almost never found. My understanding is that the main difference of 192 is that it is not bio-identical, and occasionally your body will identify it as a foreign substance and make antibodies to destroy it, rendering it useless. Once this immune response occurs you will no longer benefit from it.
Jano has also said that the dimmer content, which is in lay man's terms the proteins of the GH binding together, is the cause of the excessive sides of some generics. (
@3ml I know we've discussed this before, found a Jano post saying this after our discussion, I have not verified it to be true).
Jano has also posted very good results for much of the current generic population, and has said that the quality of GH has improved lots in the last decade.
I don't know what people here think of Jano, I have read lots of discussions on his legitimacy and really don't know what to think as I am extremely new to this world, but I do tend to believe that the last point is
generally true. I have done a lot of digging on American forums to get a bigger sample size of the market place and the legitimacy of the general populous of generic GHs, and it seems that a lot of them are continually verified through blood tests, HPLC testing, and community support. The market has completely changed in the last decade, with GH going from a tiny niche to something that my mother is asking me to get her, so it would make sense that the production and quality has followed.
Here is my mental approach: I understand that it is a little more complicated than traditional AAS, but I feel like an elevated IGF-1 level with all the accompanying "symptoms" like water, possible wrist shit, sleepy, fat loss, fullness ect, is pretty much verification of compound. It verifies compound, though not potency. As far as I understand "quality" can be equated to dimmer content, which would be (serum IGF-1/sides) or identified through HPLC.