No the risk of permanent damage is with GNRH. The risk with HCG is similar to testosterone, albeit slightly less. It signals artificially to the lydig cells in the balls to create effectively more testosterone. Everyone has some HCG in the body and no set level has been established for detection in doping in sports. Actually its often used with HMG or rFSH either alone to reduce the declining testosterone with training, or at higher doses to produce epitestosterone and all the other natural hormones for athletes doping with testosterone to bring the T/E ratio within range. (Google T/E Ration WADA). I'd suggest trying HCG, HMG and eFSH(if you can find it). HCG alone should work, but higher doses are needed for this off label use.