People say that the best way is to administer 500 iu of Human Chorionic Gonadotropin (HCG) every 5 days starting afer about the second week. If you have a 5000ui amp of Human Chorionic Gonadotropin (HCG) how do you keep it sterile if you only use 500 iu's every 5 days? Should I just put 500 iu's in 10 different syringes and then stick them in the fridge? I mean or should I just use 500 iu and then trash the leftovers. That really seems wasteful but I really dont want to get an abscess. If anyone has any recomendations on how to do this I would appreciate it.