Bloodwork, then try 500 iu hcg per week. Split into two injections, 250 Monday and Thursday. I am 43 and my balls and loads are both full size. I know for a fact at higher doses hcg does increase volume. I used it at 800 iu 3x week while on cruise because wife and I wanted another baby. Not trying to be too graphic but I over filled her cup every time. (4 months and pregnant btw, after 2 years of trying) Very noticeable visible difference in volume. I would assume that a maintenance dose would increase volume also but on a much less noticeable scale. I have been using hcg for over two years and I have no plans on quitting it. Everyone is different but its been a positive for me.