I think milage varies based on the driver lol. 2mg/week with a few shots of GHRP2 got my IGF to 388. In a clinical trial I looked at 6mg/week got average IGF to 450.
4-6iu's of Serostim used to give me an IGF of around 450 but I never had serum GH test done to check the quality of the Sero's.