I've had the gastrograffin and am pretty sure I did not do the mag citrate nightmare. But, it was a long time ago so I can't be sure. I have definitely done defocography more recently without all that prep. (I don't think they always use gastrograffin). I did it at CCF and since they are so experienced with j-pouches there, they often do their tests/procedures in less invasive ways than elsewhere.