There's no one universal questionnaire. No such question exists at any blood center I've donated at. If you answer any question in a way that would lead to th

There's no one universal questionnaire. No such question exists at any blood center I've donated at. If you answer any question in a way that would lead to the blood being unusable, they wouldn't go to the effort of taking a donation just to discard it. At least, my local blood center doesn't.