oh heavens! no wonder you have been beside yourself! Well, thanks for the update (and probably others here too that didn't know his history). It is most horrible leaving a sick pet behind at a vets in a state of hysterics/distress/ill/out of home environment...
I would have bawled buckets... When my siamese dashiell got sick (going back at least 15 years!), my ex (who had given him to me for an easter present) was so sweet. She went to Angel Memorial Hospital in Boston to see him with me during visitation hours, and when he died, she came and spent the whole weekend with me sorting through photos of "just Dash" and we tied them up in a pretty ribbon. I hadn't seen her in a few years but she came through for this tragedy... we would both be in tears leaving him after a visitation at the hospital. Your sorrow and worries are quite understandable. Again, lots of people sending chants and prayers your way and do let us know test results. Hope you don't have to work tomorrow.