slim, you look great in your avatar.
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Seriously, 1.5iu should be enough but then again each person reacts differently to the HGH. I think you know that the HGH is the real deal so you should bump up the dose by 1/2 an iu. Then again, 1.5iu for a female of pharma grade should be plenty. You doing anything with the reconstitution? Shaking the vial, storing it in room temp, preloading syringes and keeping it under the bed? You got a lot of experience so I doubt you're doing these things but maybe there's something you're over looking. Your HGH could be bunk too. How about trying some other brand of HGH for a month and see how it affects your IGF level.