It is true that natural test levels raise and fall during the day and it is true that HCG can help make levels more stable but since you dont inject HCG daily, the HCG doesnt really solve the problem on a day to day basis. Like Rick said, its a whole different ballgame when you are on TRT (as opposed to natural test production). You would look at it in more longer terms............like you inject test 1X week......your test levels spike, then start to drop until the next injection. If you use HCG in between test injections they you will see a slight bump in test levels. My personal opinion is that you should not use the HCG simply for in an increase in test, adjust your injected test dosages and/or frequency for that. Instead use HCG for infertility concerns and such, but dont use it year round. Make sure to take time off.