My Lola had Liver Shunt surgery done at University of TN done last month and is doing great. I flew from Houston and the surgery was about $1800. They ran all of the tests, pulled her baby teeth and spayed her for that amount of money - the fact that they do more of these surgeries than anywhere else, have a very specialized ICU that is very important for the 24 hours after surgery, and special heated beds that sort of inflate around these little ones during surgery that keep your baby from getting chilled were all of the reasons I left Texas to have it done there. They have an "angel" fund that helps to keep costs down. I would not spend any more money on tests until you speak with UT about what tests you have done and come up with a game plan with them. They are great! You need to join:
Liver_Shunt_And_MVD_Support : Liver Shunt & MVD/HMD Support - they will give you ALL the info you need concerning this disease and guide you through the UT process. Please PM me if you have any questions. Good luck!