After months of searching I finaly obtained some HCG. It comes with 5000 iu powder and 1 ml of water to mix with. I am unable to get any sterile solution to dilute it further. So now the concentration is 5000 iu in 1 ML. So can I just inject 0.2 ml at a time for 1000 iu doses? Does it need to be diluted further? Thanks.