I do not remember who it was, I called a plasma donation place a few months ago and asked if I was allowed to since I had donated a kidney and they said no. The reason why I called and asked was because I donated plasma before I donated the kidney and when I told them I wouldnt be back for awhile because I was donating a kidney they said I will not be able to donate plasma anymore. The place I called was not the same place that I used to go to. Nobody really seems to have a medical answer for this and of course, I always forget to ask my doctor when I see him.