100mcg is a small amount of IGF LR3. The average dose is 25 to 100mcg ED. The idea of these small 100mcg vials is that they can be mixed and used quickly, instead of letting a larger vial sit in the fridge for weeks. That being said. if you use acetic acid .06%, a larger 1000mcg(1mg) vial will remain intact for the length of your IGF cycle. 

I would suggest using a low dose of 25-35mcg, either pre or post workout, taken IM. It has a systemic effect and does not need to be shot into the muscle trained.