I have been around this board a couple years but this is my first post. Im getting ready to make my come-back after hernia surgery, (for the 4th time) I have some o****s Igf. My question is, what is the concentration? I mean how many mcgs per IU? do I need to cut it down inside the pin once I draw it out of the vial? I have a big thing of b-12, I heard of guys on here doing this, will it affect the results? Thanks guys