In my experience most patients shed most of their grafts 2-4 weeks post-op. It has been the exception where a higher percent of them remain in the anagen (growing) phase and continue to grow. But Like Dr. Charles stated, it can happen even if it's only 1-2% of the population. I would say that approximately 25% of my hairline grafts continued to grow immediately post-op, but within the next several months, they too fell out.
Sometimes you will notice that the crust fell off, but the hair within the graft remained. That hair remained in anagen.
Independent Patient Advocate
NOTE: I am not a physician and not employed by any doctor/clinic. My opinions are not medical advice nor are they the opinions of the following supporting physicians: Dr. Glenn Charles, Dr. Jerry Cooley, Dr. James Harris, Dr. Bob True & Dr. Bob Dorin