It's 70. But, like the article I quoted (Found out it was from Author L. Rea from one of his books, like his writing!) stated, even that is broken down into DES igf-1 by lactic acid. DES sounds very very exciting on paper and the few reports I've read about people using it sound very promising!
mmk64, I hear you about the intestinal growth thing. That's one of my concerns since I use a variety of peptides. But, yes, I think the short half life would very much protect us from intestinal growth.
Here's an article I wrote yesterday explaining some of my thinking on all this (I post as another name on another forum, for those who saw it there also)-
http://www.professionalmuscle.com/forums/articles-forum/64045-trying-understand-igfs.html#post844554
Basically, the more I distill this information the more I believe that the best approach would be something like a combo of IGF-2 LR3 (because, it too is 70 amino acids, not 83 so it's more useable than 1-lr3. Plus, it protects and has a synergistic effect with other IGFs!), DES (1-3) IGF-1 (for obvious and reasons already stated) and regular MGF (it's cheap and you'll use the 2 mg in a month or so anyway so you'll have good, active product for the most part through the whole run.)
I don't think it matters that these are in and out of the system so quickly. DES is resistant to being made inactive by binding proteins and destroyed by lactic acid, so where's the downside? IGF-2 LR3 protects and gives synergy and MGF does what it does- helps with hyperplasia!
Right now I'm finishing up my batch of igf-1 lr3 and peg-mgf basically because I already have it and I believe it will still bring decent results: I don't think peg-mgf is that bad, but will try regular soon enough. And, having the insulin like effects present from 1-lr3 can't hurt even if it itself isn't the best for inducing growth.
Ron, thanks so much for listening to all this and taking it in! We need a good, solid supplier of des and igf-2 that we can trust! I can understand if the numbers just don't work as most of us meatheads are kinda broke. But, if it's doable, I think the trend towards these newer drugs will start to show itself. Especially if we all start seeing great results!