Is this your first low T? I imagine any good PCP would refer you to a specialist like endo or a trt clinic for further evaluation. I personally would not want a non-specialist to just throw something at this. Is it primary or secondary hypogonadism? This matters, is it your testicles failing, E2 too high due to possible liver damage shutting down your gonadal axis after abusing opiates, or is this a pituitary problem caused by a tumor? You need LH,FSH, possibly prolactin, an Iron panel etc. to figure out the cause. Personally, I would push your pcp for some of these tests along with a referral to a specialist, and go from there unless you want to buy the labs on your own and figure out the aforementioned yourself.
I think test C is like 2-4 weeks although that is for it to totally be wiped out. Taking 500mg/wk and pretending like you are on TRT doses, I would think that depending on your body probably 2-3 weeks for it to return to something more normal for a person on trt. I mean a surefire way to know is to get it tested privately yourself.
Idk, this seems meh to me, maybe I am missing something, but how much money are you really saving? If the lab tests were accurate and not fakely low during blasts, I would understand, labs are expensive. Really though, the only expense they are paying for is lab testing during cruises and a vial of T and maybe some E2 blockers. Plus, at that point, you could always just ask your PCP for labs like this during cruises anyway... So, saving maybe $100-$200/yr, and in return you are throwing your body through loops cutting T, and then restarting it... I am not educated on this though, maybe it is more lucrative then I am estimating.