i have read that many bodybuilders found injecting pgf-2 away from the stomach will lessen the stomach cramping effects, of course the half life of that compound is much shorter but i believe gh15 mentioned in one of his posts somewhere that scar tissue can affect systemic absorption quite a bit as well.
what advantage would there be to subq or iv anyways? or near the stomach?
ive never heard of scar tissue having an effect on absorption. anything you inject will have systemic effects no matter how you inject it. ive never used pgf2 so i cant comment on it but maybe it was just a placebo effect?
there really isnt much to be gained for most substances. igf-lr3 has a long half life. it is specifically made for that purpose so it doesnt matter how you use it. there will be no difference between the injection methods. if you were using something like humalog, that would be a different story. it would still go systemic but if you do subQ it would take 15 minutes to hit the blood stream versus immediately if you did IV. subQ takes the longest to hit the blood, then IM, then IV.
if you really wanted to increase the local effect of igf-1 you could try doing multiple microinjection into the muscle. like maybe 2mcg in 25 evenly spaced spots. you would still have most of the hormone going systemic but it owuld hit a few more receptors. however the result would not be worth the time and cost of the needles lol.