hi as most of you know Human Chorionic Gonadotropin (HCG) is now hard to get,i have some ovitrelle r_hcg.it comes in in a preloaded syringe 250mg in 0.5ml which is approx 6500iu.does anyone know the best way to split it into approx 250iu,the best way to store it and how long will it keep thanks