Being on testosterone 1 month after FUE surgery, will that effect the treatment?

It is best to ask your surgeon about post operative care as each doctor has their unique regimen.  

Testosterone can injure hair follicles that are prone to the effects of its byproduct.  Thus, if you are suffering from male pattern hair loss you can be doing harm to your hair. Taking Propecia may slow down the hair loss process.

Testosterone transforms into DHT which can injure hair follicles predisposed genetically. If you have anchogenic (male pattern hair loss) alopecia  you will likely lose hair by using testosterone. Propecia may lessen the harmful effect of testosterone.

As my other colleagues mentioned, taking exogenous testosterone will not affect the transplanted hairs as they are DHT resistant, however it can lead to increased miniaturization and loss of the existing hairs.  For this reason it's a good idea to be on Finasteride while you take T.  Good luck! Dr. Rome

Use of testosterone will not have an adverse effect on your grafts but could lead to more rapid loss of your native hair.  Discuss this with your surgeon and consider starting finasteride (Propecia).

Taking testosterone after FUE will not impact the growth of the grafts or the healing of the FUE wounds, but it will impact negatively your native hair that is prone to balding