well look at it like this if you had 5000iu of HCG powder and you mixed it with 1 ml of bac water you would have 2500iu per 1/2 ml or 5000iu per 1ml/cc
5000iu mixed with 5ml would be 1ml per 1000iu. 1cc=1ml, so yes 5000iu amp mixed with 5cc would be 1000iu per 1cc/ml. Hope i didnt mind fu*k you