One thing I would like to add here...
If you have ANY history of GERD ( acid reflux) - or any other gastroenterological symptoms/diagnosis - make sure your Dr. writes the prescription to INCLUDE an upper - and lower G.I - at the same time....Why?
Because - your insurance company will appreciate you saving them money ( 1 event, 1 anesthesiologist, 1 Dr. running both procedures...) - and you will appreciate only having to have 1 trip to the clinic/hospital for both of these procedures.
Just makes sense from both financial, and convenience standpoints.....