Referral Destination for Testosterone Therapy
Male patients requiring testosterone therapy should be referred to adult endocrinology as the primary specialist for diagnosis, initiation, and management of testosterone replacement therapy. 1, 2
Rationale for Endocrinology Referral
The Endocrine Society has established comprehensive clinical practice guidelines specifically for testosterone therapy in adult men with androgen deficiency syndromes, positioning endocrinology as the primary specialty for this condition 1. These guidelines provide detailed protocols for:
- Diagnostic confirmation using morning total testosterone levels with repeat testing
- Treatment initiation with various formulations (injectable, transdermal, buccal)
- Monitoring schedules at 3 months, then annually
- Dose adjustments to achieve mid-normal testosterone range
- Management of complications including erythrocytosis and metabolic effects
The European Association of Urology acknowledges that while urologists should have knowledge in this area, the condition fundamentally requires endocrine expertise 3, 4. Testosterone deficiency is an endocrine disorder affecting multiple organ systems beyond the genitourinary tract, including bone metabolism, cardiovascular health, and metabolic function.
When Urology Consultation is Indicated
Urology referral becomes necessary in specific circumstances during testosterone therapy, not for primary management 1:
Mandatory urological consultation criteria:
- PSA >4.0 ng/mL (verified)
- PSA increase >1.4 ng/mL within any 12-month period during treatment
- PSA velocity >0.4 ng/mL/year (using 6-month baseline)
- Palpable prostate nodule or induration on digital rectal examination
- AUA/IPSS prostate symptom score >19
- Suspected or confirmed prostate cancer
Practical Clinical Algorithm
Step 1: Initial Evaluation (Primary Care or Endocrinology)
- Confirm low testosterone with morning levels on ≥2 occasions
- Document consistent symptoms (sexual dysfunction, fatigue, decreased muscle mass)
- Screen for contraindications (active prostate/breast cancer, severe BPH, erythrocytosis >50%)
Step 2: Refer to Endocrinology for:
- Treatment initiation and formulation selection
- Dose titration to achieve mid-normal testosterone levels (350-700 ng/dL)
- Monitoring hematocrit, testosterone levels, bone density
- Management of metabolic complications
- Long-term follow-up and treatment adjustments
Step 3: Involve Urology only when:
- Prostate monitoring reveals concerning PSA changes (see criteria above)
- Severe lower urinary tract symptoms develop (IPSS >19)
- Prostate abnormalities detected on examination
- Patient has history of prostate cancer requiring specialized assessment
Important Caveats
Do not refer to urology for routine testosterone therapy initiation or management. The 2018 and 2006 Endocrine Society guidelines clearly establish this as an endocrine condition requiring endocrinologic expertise 1, 2. Urology serves a consultative role specifically for prostate-related complications, not primary hormone management.
For men seeking fertility preservation: Endocrinology remains the appropriate referral, as they can coordinate gonadotropin therapy (hCG/FSH) instead of testosterone, which suppresses spermatogenesis 4. Reproductive endocrinology or urology may be involved secondarily for fertility-specific interventions.
The 2025 European Association of Urology guidelines confirm that testosterone therapy requires endocrine expertise, with urologists serving primarily in a monitoring capacity for prostate-related safety parameters 4. This represents international consensus across multiple specialty societies 5, 6, 7, 8.