This is my first post, but I've been learning from you all for years. I've been on TRT for about 6 years. I have always gone to the clinic and had them administer my injection once per week. I decided that I would rather start doing self-inject from home. They have given me enough pre-filled syringes for a month. I want to put a couple of weeks worth in an empty sterile vial. I know that when removing solution from a vial, you put an equal measure of air in, but when putting solution into a vial, would you pull air out, before or after you put the solution in?