After FUE, is it correct the donor area will replenish approximately 25% of the grafts that were harvested from it?

That is incorrect. Once the hair has been extracted from the donor area it generally will not regrow. Sometimes ACELL can be used and with minimal depth of punch and small punches you may see a little graft regrowth however, 25% is very optimistic. If a surgeon is seeing 25% regrowth in the donor area it is likely that the follicles that they attempted to extract were transected and those are the ones that grew back.

Once you harvest the hairs, it does not grow back.  Donor area does not "replenish".  If you are confused about what a doctor may have told you, it may be best to contact your doctor for clarification.

Thank you for your question. The donor area is selected as the donor because of its capability to replenish all of the grafts. NeoGraft's Follicular Unit Extraction method uses an automated system to help ensure accuracy and precision as the least invasive procedure currently available for hair transplants.  I suggest that you move forward and contact your board certified facial plastic surgeon. 

Best wishes,

Grafts that are taken from the donor area do not grow back or replenish. Everyone has a finite number of grafts available and they don't ever increase over time. This is why using them efficiently is so important during transplants, and why its usually a good idea to leave some left over in case you ever want a future transplant.

The hair harvested for a transplant will not grow back in the donor area.  It will grow in the new location.