Testosterone HRT & hair transplant (FUE). Will the testosterone have an effect on the transplanted hair growth?

Excellent question! What you understand is exactly correct. The transplanted hair will not be affected by the testosterone you are using for HRT, even in its initial growth phase. The native hair, however, will be significantly affected by the testosterone. Good luck!

Testosterone supplement or replacement therapy should not affect the transplanted hair or donor hair.  If you are worried, share your concern with your doctor and inform them of your medical / medication issues.

Fantastic question.  Testosterone will affect hairs prone to male pattern hair loss, NOT the hairs in the region used for donor hairs in a hair transplantation.  However, if there is an over-aggressive harvest high on the back of the head and your pattern of hair loss extends into this region, then your transplanted hair may have accelerated injury.  This, however, is unlikely.  But do see an experienced hair doctor to ensure only the proper areas are used for harvest.

Testosterone HRT can certainly accelerate male pattern hair loss due to its conversion to DHT Dihydrotestosterone (the deadly hormone to hair follicles), but it should NOT affect the initial growth phase of the transplanted hair.  As long the the FUE grafts were harvested properly from an area of the Donor Scalp that is deemed to be relatively permanent by your ABHRS-certified surgeon, those hair follicles will produce hair for the long-term without being affected by DHT.  If you are not on medical therapies like finasteride, you are mainly at risk for losing the non-transplanted hair more quickly if you are on HRT Testosterone. Sincerely, Dr. Alan J. Bauman, MD, ABHRS, FISHRS

The use of Testosterone and HRT after a hair transplant will not impact the transplant but it may impact the native hair negatively