Are these all just options or do you actually recommend changing up between 12 sites? What size needles should I get, I only currently have 23g 1.5in and insulin needles for hcg
They are all options. I use them all. Well not the tri so much but the others. The longer you give the muscle between pins the better. He'll start on the left side delt and work your way down then switch sides. Or alternate left right. Just use more sites.