You can inject just about anything subQ or IM.. according to doctors.. just means there will be a difference in absorption.. usually takes longer to release and absorb in a subQ shot.. and sometimes there is less absorbtion.. IM is usually best.. except for IV.. which please don't go trying that.. but except for a few choices substances.. anything can be shot IM or subQ.. you could do your test shots subQ if you wanted.. it would still be effective.. but to get the maximum effectiveness of the IGF.. go with IM in my opinion.. besides.. anytime you do any kind of shot.. some of it is almost always gonna end up going subQ.. not all of it will always stay in your muscle..
i went right under the skin, but yes, you can go into the muscle area if needed too. thats prop just as easy especailly with the needle u will be using.