I'm not allowed to give blood because I've had piercings in the past year. Was the place I got my piercings reputable and sterile? Yeah. Does that mean they should take my word for it? No.

There are certain procautions they have to take. If a mistake IS made, the situation could result very poorly.

Personally I think it is irresponsible to lie on a form like that. You aren't taking chances with your life, you could be taking chances with another life. Not to mention wasting resources...