Thin hair at age19.i will have hair transplant in a week.is it possible for hair to fall/lose from donor area as i hav androgenic alopecia ?

Not likely: Your doctor will choose a donor site from which you are least likely to have future loss. Good luck!

Possible: You might have some thinning and shedding from the donor are due to the procedure itself, but this should grow back over time. At age 19, it is very important that the donor area is well planned, as this area could thin out in the years to come.