If one were wanting to only remove one testicle, but also wanted to get on TRT, how would one lower testosterone levels to a significant degree to warrant replacement therapy if they had one left? Once one is removed the LH / FSH levels change telling the single testicle to produce more, but how long does this process take? does it take a matter of weeks before the balance normalizes as would be a similar case if recovering from steroids or something? Basically I'm just wondering how one would prevent the levels from normalizing so that TRT would be an option. I have benzos like diazepam. Chronic diazepam is supposed to lower the levels without even effecting LH levels. would this mean that if I take it following the CaCl2 injections, they would presumably stay low? I know this is a long post. Just really want to reassure myself before I do this. Gathering more knowledge so I'm not left in the dark.

No one knows?

What you are asking is hard to answer definitively. We are all different. Some guys/girls/eunuchs here had a real hard time killing off their testicles, some not so much. Generally the remIning testicle will take over within hours to days. You are right that a surge of LH and FSH goes out when the t level goes down, and depending on the remaining testicles ability to produce your levels will normalize or not. That said my remaining testicle was 80% damaged when removed and was putting out enough to keep my levels at about 120ng/dl. I can't tell you what to do, but if I wanted to lower my t level and not be castrate I would read the entire CaCl thread and make some informed decisions.