thanks for writing in.
HIDA scan is not the investigation for proving a non functioning gall bladder
. The symptoms which you have descibed are related to a post cholecystectomy
syndrome. You need to reduce the intake of fatty foods as well as start bile acid
Before you can start the treatment it would be advisable to get aimaging of the biliary tree in the form of a MRCP to ensure normalcy of the biliary passages.
I hope this answers your querry.