i dunno lol just the idea that it could be pretty risky... but i do see ur point, lets say units on the needle would be 20 mcg of igf-1 and then u fill up another 8 iu with slin and then u have ur 20 mcg and 8 iu slin for the evening, this is ur idea? maybe this could work, but again the idea of what they would do to each other when mixed is not clear... also, now u agree that the idea of using insulin as a carrier for igf-1 doesnt make much sense, right?