Well. I googled.
Regarding testosterone suppression. It has been widely known just how unreliable suppression actually is. This has been commented on by those who have been vocal about how testosterone suppression is absolutely fucking useless for women’s sports fairness and should never have been proposed.
It is also highly harmful to males to do this. And taking estrogen doesn’t protect against the harm from the loss of testosterone. Something that some people who are self-appointed spokespeople for trans people don’t seem to understand. It is wrong to demand that any male suppresses their testosterone as it can shorten lives.
Anyway, here is a small study.
https://www.sciencedirect.com/science/article/abs/pii/S1530891X20353969
Endocrine Practice
Volume 24, Issue 2, February 2018, Pages 135-142
Jennifer J. Liang MS, Divya Jolly BS, Kelly J. Chan BA, Joshua D. Safer MD
ABSTRACT
Objective: Most transgender women depend on medical treatment alone to lower testosterone levels in order to align physical appearance with gender identity. The medical regimen in the United States typically includes spironolactone and estrogens. The purpose of this cross-sectional study was to assess the testosterone suppression achieved among transgender women treated with spironolactone and estrogens.
Methods: Testosterone and estradiol levels were extracted from the electri electronic medical records of 98 anonymized transgender women treated with oral spironolactone and oral estrogen therapy at the Endocrinology Clinic at Boston Medical Center.
Results: Patients starting therapy required about 9 months to reach a steady-state testosterone, with significant heterogeneity of levels achieved among patients. Patients with normal body mass index (BMI) had higher testosterone levels, whereas patients with obese BMI had lower testosterone levels throughout treatment. Stratification of patients by age or spironolactone dosage revealed no significant difference in testosterone levels achieved. At steady state, patients in the highest suppressing quartile were able to achieve testosterone levels of 27 ng/dL, with a standard deviation of 21 ng/dL. Measured serum estradiol levels did not change over time and did not correlate with dosage of estradiol administered.
Conclusion: Among a cohort of transgender women treated with spironolactone and estrogen, the highest suppressing quartile could reliably achieve testosterone levels in the female range at virtually all times. The second highest suppressing quartile could not achieve female levels but remained below the male range virtually all of the time. One quartile was unable to achieve any significant suppression.
I cannot access this study. I will look for others. However this came out around the same time as the article below. Here is the article that relates to this study.
https://www.bumc.bu.edu/camed/2018/02/20/medicine-alone-does-not-completely-suppress-testosterone-levels-among-transgender-women/
“Only a quarter of transgender women taking a regimen of spironolactone and estrogens were able to lower testosterone levels within the usual female physiologic range. Another quarter could not achieve female levels but remained below the male range virtually all of the time, while one quarter was unable to achieve any significant suppression.”
“This study allowed us to identify patients who achieved differing levels of testosterone suppression, including a group of patients unable to achieve any significant testosterone suppression. These patients may have had difficulty adhering to their treatment or may have had a different physiologic response to treatment than other patients. On the other hand, patients who were able to achieve high levels of suppression may have adhered stringently to their treatment or had robust response based on physiology,” explained corresponding author Joshua D. Safer, MD, FACP, associate professor of medicine at Boston University School of Medicine.”
With this in mind, would you like to tell us all on this thread at what n/mols do male people on testosterone suppression lose their sexual urges.
And can you point to where that relates to female testosterone levels to support your claim:
“Testosterone is the reason men can get an erection and the reason men generally have a higher sex drive then woman !”
TL/DR
“Only a quarter of transgender women taking a regimen of spironolactone and estrogens were able to lower testosterone levels within the usual female physiologic range. Another quarter could not achieve female levels but remained below the male range virtually all of the time, while one quarter was unable to achieve any significant suppression.”
Please stop spreading misinformation on threads.