Retrospective review of changes in testosterone dosing and physiologic parameters in transgender and gender-diverse individuals following hysterectomy with and without oophorectomy

Abstract

Background: As more transgender and gender-diverse patients undergo hysterectomy, gaps in knowledge remain about how testosterone dosing or other physiologic parameters change following surgery and how these are influenced by concomitant oophorectomy.

Aim: The aims of this study were to determine the incidence of testosterone dosing change after gender-affirming hysterectomy and to compare this incidence between patients who underwent oophorectomy and ovarian preservation.

Methods: This multicenter retrospective cohort study consisted of transmasculine patients who underwent hysterectomy for gender affirmation.

Outcomes: Outcome measures included testosterone dosing changes at least 3 months following hysterectomy, as identified by clinical documentation, as well as clinical and laboratory parameters assessed for a change after hysterectomy: free and total testosterone, estradiol, hemoglobin, hematocrit, total cholesterol, weight, and blood pressure.

Results: Of the 50 patients, 32 (64%) underwent bilateral oophorectomy, 10 (20%) unilateral oophorectomy, and 8 (16%) maintained both ovaries. Eight percent (n = 4) changed testosterone dosing following hysterectomy. Those who underwent bilateral oophorectomy were no more likely to change their testosterone dose than those who did not (P = .09). Those who also used menstrual suppression were 1.31 times more likely to change doses of testosterone after hysterectomy (95% CI, 1.09-1.82; P = .003). For those who had pre- and posthysterectomy laboratory and clinical values, the majority saw no clinically significant change. However, among patients who underwent bilateral oophorectomy, the calculated free testosterone increased by 90.1 ± 288.4 ng/dL (mean ± SD), and estradiol dropped by 20.2 ± 29.0 pg/mL.

Clinical implications: In a field where access to care can be a significant barrier, there is unlikely to be a need for routine reassessment of testosterone dose or laboratory parameters following hysterectomy, whether or not a bilateral oophorectomy occurs.

Strengths and limitations: Limitations of the study include its retrospective nature and the lack of consistent clinical laboratory testing, which resulted in limited data about any given hormonal change. The heterogeneity of our population limited the number of patients undergoing or not undergoing oophorectomy; however, it allowed our study to more truly reflect a clinical environment.

Conclusion: In a multisite cohort of individuals who underwent hysterectomy for gender affirmation, few patients changed testosterone dosing after surgery. In addition, dosing change was not associated with the presence or absence of bilateral oophorectomy, and most measured laboratory values remained consistent following hysterectomy.

Keywords: health services for transgender persons; hysterectomy; oophorectomy; testosterone; testosterone dosing; transgender.