TRT can be gender-affirming care, but it is not always gender-affirming care.
The answer depends on why testosterone is prescribed and who receives it:
- For a transgender man or some nonbinary people, testosterone may be prescribed as masculinizing hormone therapy. In that setting, testosterone therapy is a form of gender-affirming hormone therapy.
- For a cisgender man with medically diagnosed hypogonadism, testosterone replacement therapy usually treats a hormone deficiency. It is generally described as endocrine treatment, not gender-affirming care.
- For a transgender woman, testosterone is usually not the gender-affirming hormone. Treatment may instead involve estrogen and, when appropriate, medication that lowers testosterone.
TRT and Gender-Affirming Hormone Therapy Compared
| Term | Main purpose | Typical use |
|---|---|---|
| Testosterone replacement therapy, or TRT | Restore testosterone levels when the body does not produce enough | Hypogonadism and related endocrine conditions |
| Masculinizing hormone therapy | Produce physical characteristics that better align with a person's gender identity | Transgender men and some nonbinary people |
| Gender-affirming hormone therapy, or GAHT | Support a person's gender-affirmation goals through hormone treatment | Testosterone, estrogen, and sometimes testosterone-lowering medication |
The same testosterone products may be used in both situations. The medical indication, treatment goals, target hormone range, and monitoring plan can still differ.
When Is Testosterone Considered Gender-Affirming Care?
Testosterone is gender-affirming care when it is prescribed to help a transgender or gender-diverse person develop physical characteristics that align with their gender identity or personal goals.
Masculinizing testosterone therapy can cause:
- A deeper voice
- Facial and body hair growth
- Increased muscle mass
- Redistribution of body fat
- Cessation of menstrual periods
- Clitoral growth
- Changes in skin, libido, and vaginal tissue
Some changes may not fully reverse after stopping testosterone. These include voice deepening, facial hair growth, clitoral growth, and male-pattern hair loss.
Gender-affirming hormone therapy is not limited to transgender men. Some nonbinary people use testosterone to achieve selected physical changes or maintain hormone levels between typical male and female ranges. The treatment plan depends on the person's goals rather than one standard regimen.
Is TRT for Low Testosterone Gender-Affirming Care?
Usually, no.
When a cisgender man receives testosterone for consistently low testosterone and related symptoms caused by a medical condition, the treatment is generally classified as testosterone replacement therapy for hypogonadism.
The Endocrine Society describes TRT in this context as treatment for appropriately diagnosed hypogonadism, including conditions affecting the testes, pituitary gland, or hypothalamus.
That does not make the treatment less important. It describes a different clinical purpose:
- Hypogonadism treatment: restores deficient testosterone.
- Gender-affirming testosterone therapy: helps align physical sex characteristics with a person's gender identity or transition goals.
Does the Medication Determine Whether Care Is Gender-Affirming?
No. The medication alone does not determine the classification.
Testosterone can be prescribed for several reasons, including hypogonadism and masculinizing gender-affirming hormone therapy. The patient's identity, treatment goals, diagnosis, and clinical context determine how the care is described.
UCSF notes that testosterone products used for masculinizing hormone therapy are generally approved for other indications and prescribed off-label for gender affirmation. Off-label use means that a medication is prescribed for a purpose outside its regulatory approval. It does not mean the treatment is inherently unsafe or illegitimate.
Is Gender-Affirming Care Broader Than TRT?
Yes. Gender-affirming care is a broader term than testosterone therapy.
It can include:
- Masculinizing hormone therapy
- Feminizing hormone therapy
- Puberty blockers in appropriate clinical circumstances
- Voice therapy
- Chest or breast surgery
- Genital surgery
- Fertility counseling
- Mental health and primary care support
Not every transgender or nonbinary person wants hormones or surgery. Gender-affirming care is based on the individual's needs and goals.
What Should Someone Consider Before Starting Testosterone?
Testosterone should be prescribed and monitored by a qualified healthcare professional. Before starting treatment, a person may need to discuss:
- Baseline health assessment and laboratory testing
- Testosterone levels and blood count monitoring
- Fertility preservation
- Pregnancy prevention when relevant
- Cardiovascular and metabolic risk
- Acne, mood changes, sleep apnea, hair loss, and increased red blood cell levels
- Physical changes that may be irreversible or partly irreversible
The Endocrine Society recommends discussing fertility preservation before hormone treatment and monitoring hormone levels and relevant health risks during therapy.
Bottom Line
TRT is gender-affirming care when testosterone is prescribed as masculinizing hormone therapy for a transgender man or gender-diverse person. TRT for medically diagnosed low testosterone in a cisgender man is generally not described as gender-affirming care.
For transition-related treatment, the clearest terms are masculinizing hormone therapy and testosterone-based gender-affirming hormone therapy.