• Wylie C Hembree, Peggy Cohen-Kettenis, Henriette A Delemarre-van de Waal, Louis J Gooren, Walter J Meyer, Norman P Spack, Vin Tangpricha, Victor M Montori, and Endocrine Society.
• The Endocrine Society, 8401 Connecticut Avenue, Suite 900, Chevy Chase, Maryland, USA.
• J. Clin. Endocrinol. Metab. 2009 Sep 1; 94 (9): 3132-54.

ObjectiveThe aim was to formulate practice guidelines for endocrine treatment of transsexual persons.EvidenceThis evidence-based guideline was developed using the Grading of Recommendations, Assessment, Development, and Evaluation (GRADE) system to describe the strength of recommendations and the quality of evidence, which was low or very low.Consensus ProcessCommittees and members of The Endocrine Society, European Society of Endocrinology, European Society for Paediatric Endocrinology, Lawson Wilkins Pediatric Endocrine Society, and World Professional Association for Transgender Health commented on preliminary drafts of these guidelines.ConclusionsTranssexual persons seeking to develop the physical characteristics of the desired gender require a safe, effective hormone regimen that will 1) suppress endogenous hormone secretion determined by the person's genetic/biologic sex and 2) maintain sex hormone levels within the normal range for the person's desired gender. A mental health professional (MHP) must recommend endocrine treatment and participate in ongoing care throughout the endocrine transition and decision for surgical sex reassignment. The endocrinologist must confirm the diagnostic criteria the MHP used to make these recommendations. Because a diagnosis of transsexualism in a prepubertal child cannot be made with certainty, we do not recommend endocrine treatment of prepubertal children. We recommend treating transsexual adolescents (Tanner stage 2) by suppressing puberty with GnRH analogues until age 16 years old, after which cross-sex hormones may be given. We suggest suppressing endogenous sex hormones, maintaining physiologic levels of gender-appropriate sex hormones and monitoring for known risks in adult transsexual persons.

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