By conventional standards I was never on high doses. But when I started out with 100 mg testosterone cypionate per week delivered EOD it put TT at about 1,250 ng/dL. Thanks to the influence of the late Curt Moyer I knew this was higher than I wanted, and titrated down to more like 65 mg/week. Of course now that I know that 100 mg TC/week—10 mg T/day—is basically not even physiological I do discourage starting so high. For me even the 65 mg/week was excessive, though I was in denial for a long time. It hadn't occurred to me that having free testosterone in the top quartile of the reference range could be so problematic even as I was enjoying the enhanced athleticism.
There is this common assumption that the optimum
TRT dose is the one that yields your particular healthy youthful levels. But without evidence it remains speculative. There's also a contrary hypothesis saying that the higher levels of youth are actually not ideal for aging bodies.
With respect to my levels not being much over my original hypogonadal ones, you are alluding to my recent accidental discovery that such levels can produce surprisingly good results. I certainly had not intended to be dosing at < 1 mg T per day, yet measurements suggested that that's what happened as I experimented with testosterone suspension.