I had a very dense donor region to start with. I've had 7k grafts done with not very good yield. Surgeons have estimated that I have 2750 or so grafts left. (Asmed, diep, and h&w). My donor area doesn't look bad or particularly thin but it has thinned out but no one can notice I've had anything done because it's not particularly thin in the back so I Def still have grafts left.