upper bowel follow through ?

Hi, had the upper bowel follow through today and they said it would take 2-4 hours for it to go through and I told them don't think it will with me as soon as I eat it goes through,  They didnt say anything but got the impression they didnt believe me. Well within 30 minutes I was done.  ???is  has anyone else have this and how long??  does anyone know what it means by the length of time it takes to pass through?   I get so tired of people thinking we dont know our bodies. We are the ones that live with this Disease 24/7.  Thanks for listening to me. 

diagnosed  in 1982 after heavy bleeding, havn't had much relief.  moved to another state so have new GI will see.

Some facilities add a little Reglan to the barium to help w/its passing thru. For those of us w/fast transit time to begin with .....

More people having a SBFT have problems w/getting the barium out of their system after the procedure is the reasoning for using the Reglan but also large institutions doing many SBFTs all day long use it to better schedule and move the patients thru the procedure.