Wishing you good luck and saying prayers. We had a dog that had immune mediated thrombocytopenia secondary to ehrlichia (at least that's what was thought). One of our tests came back with 0 platelets. We took her to Ohio State to try for everything, and we still couldn't get her out of it. I really hope things turn out better for you! I feel for you, it was so upsetting trying so hard and not making any ground.