I had lymphoma, which is categorized as a blood cancer. As a result, I'm not allowed to donate blood (ever again) or organs. The thing is, I'm almost certain that this isn't recorded anywhere. Not that I want it being recorded (on principle for privacy rights; I don't actually care), but I'm pretty sure I could donate both blood and (I hope never to be in this situation) organs, and no one would be any the wiser.
