Hiee,
Several things to be addressed before hand. One SRS without an orhcie before hand is a sex change operation due to having the testes removed at that time and then the cosmetic work done. SRS post orchie is simply cosmetic as the testes have already been removed and the endocrine system has permanently been altered ie natal female levels of Testosterone being produced by the body. Two the testosterone produced by the testes is much stronger then that produced by the adrenal glands.
I have had my blood work done quarterly since begining HRT, partly due to my age and partly due to a keen interest in the levels so that my various dosages could be fine tuned if need be.
My original T levels were about 16 nmol / L or pretty much in the middle of the acceptable range for an adult male. According to my lab acceptable ranges for adult females were 0.5 nmol / L to 2.5 nmol / L. I used Spironolactone xxx mg per day as my anti-androgen. At about 5 1/2 months my T levels had dropped to 2.0 nmol / L. 3 months later they were down to 1.5 nmol / L. At this point I kept my Spiro at the same dosage but had tripled my Estradiol. My T levels basically flat lined at 1.5 nmol / L. There were minor fluctuations of a tenth of a point or so up or down. My Estradiol levels had gradually been climbing during this time by about 55 pmol / L. The lab sheet showed that natal adult females in the ovulation phase would normally have 400 pmol / L to 1300 pmol / L. 15 months into HRT my E level had spiked at 561 pmol / L. 3 months later just after my orchie (like a week) it had dropped to 355 pmol / L ( I was quite ill with nausea and vommiting and many days didn't take my mones at all ). My T level was now down to 0.8 nmol / L. The last blood work done about 2 months ago now showed my E had climbed to 852 pmol / L and T was down again not much at 0.7 nmol / L. The important thing here to note is that My E level had rebounded and increased and at the same time my Dosage had been decreased by 1/3, I also was NO longer having to take an anti-androgen ie Spironolactone. At about 7 months into HRT any really noticable changes had slowed down considerably and pretty much stayed that way. HRT was working but just seemed quite slowly.
I am now 6 months post orchie and there has been a big difference. My breasts are now quite rounded and filling out and expanding with some noticable cleavage in the nude. The biggest change though seems to be in my fat distribution as the fat around my waist is deffinately migrating to my hips and buttocks and the love handles I had are slowly melting away, although I suppose they will never fully disappear without doing pilates. My BODY hair (not facial) is now slow in growing and is even finer then before. My face is somewhat fuller (rounded??) then before as well. My labido is slightly enhanced lol intensely horny 4 to 8 times a month. I have blood work to be done in about 2 or 3 weeks and I think that my E levels may be over the 1000 pmol / L level in which case I will probably reduce my Estradiol by 25%. My endo is of the opinion that during feminization a transexuals E levels should be in the range of 400 to 600 pmol / L although I persuaded her that my target level of 800 or so was OK for me

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In short since having had the orchie and removal of testes produced Testosterone I HAVE noticed significant physical changes taking place. The first 3 months post my body was in a bit of chaos as it had to reprogram itself to a new hormanal state of being.
I don't know if this will help you or not, we are all different and our bodies behave slightly differently, but this has been my experience. I am 55 years young and in average to better then average physical health. My work is quite physical and keeps the blood and oxygen flowing at a pretty good rate thru out my body during the day.
Byee,
Brina