I really like igf. I prefer Des over lr3. But I like lr3 as well. I usually reconstitute the vial with 1 ml of acetic acid. Then back load the slin pins with the acetic acid/igf and freeze the slin pins. When they are ready for use I defrost add 30 units of ba to cut the acetic acid potency and to "spread"out the ifg so you don't waste much in the dead space of the rig. Some people report acetic acid not stinging by itself. I have no idea who those crazy mofos are cause even diluting it it stings for a good 20 secs.
I usually shoot 50 mcg bilaterally into the muscle I'm working with des you need to inject in the car or locker room preworkout. Lr3 you have little longer. I really respond well to igf an uuse it at some point in almost every cycle