I've been taking it too long. At least that's how it seems.
Seriously, I did not initially include it as part of my protocol; it isn't, strictly speaking, necessary to correct hypogonadism and I resisted my doctor's efforts to prescribe it for me. Six months into treatment I adopted it to reverse atrophy. It restored my testicles. But that's all it has ever done. I'm considering this subjectively and objectively. I have never "felt" any of the subjective effects of HCG. I've also never seen it have impact on my other hormonal measurements.
My protocol is an unqualified success; I'm very happy with TRT. But as far as HCG goes...