Hello, I am on Sustanon 250, I am using 62.5mg on Monday and 62.5mg on Thursday. I would like to know if it's safe to store the Sustanon on empty sterile vials. Since the prefilled syringe comes with 250mg and I need 125mg a week, can I inject 3 prefilled syringes in to the sterile vial and dose from there to insulin syringes, the vial would last 6 weeks with 750mg. The Sustanon I have doesn't come on ampules it comes in prefilled syringes with 250mg/1ml. I would really appreciate your help.