Testosterone Patch Application Guidelines

Application Site Recommendations

The American Gastroenterological Association recommends applying testosterone patches to dry, intact skin of the back, abdomen, upper thighs, or upper arms for optimal absorption and therapeutic effect 1
The recommended application sites are chosen because they provide consistent absorption, are easily accessible for self-application, minimize risk of transfer to others, and allow for rotation of application sites to reduce skin irritation 1

The guideline recommends selecting a clean, dry area of skin, ensuring the area is free of hair, oil, and irritation, applying the patch firmly, rotating application sites daily, and avoiding bony prominences or areas with significant movement or friction 3
Follow-up should occur at 1-2 months to assess efficacy and consider dose adjustments, with subsequent monitoring every 3-6 months for the first year, and yearly monitoring thereafter 3
Each monitoring visit should include assessment of symptomatic response to treatment, evaluation of voiding symptoms and sleep apnea, digital rectal examination, and blood tests for testosterone levels, PSA, and hematocrit/hemoglobin 2

Skin rash or irritation at the application site can occur in up to 66% of users, according to the New England Journal of Medicine 2
Patches should not be applied to genital areas unless specifically designed for scrotal application, irritated or damaged skin, or areas with excessive hair, and skin irritation may require discontinuation in some cases 2