I recently was voulentold to donate blood. One of the questions I was ask was something along the lines of have you ever been in jail for more than 72 hours. Several years ago, I used to sell plasma and recall the same question.
Why does this matter? Is it because the average male can only go without sex for 72 hours and they figure he must have been turned while in confinement? Trust me, I can go a lot longer than 72 hours. I am married after all.