Yes, I can understand your need to know exactly what occurred medically here, if for no other reason than it can help you recognize the same/similar symptoms in a future rat and can cater your care accordingly.
I sometimes wonder if I should do it with my current girl whenever she goes, as I'm at a loss as to what's going on; sometimes it seems like PT, but then she'll scratch at her ears, shake her head if I touch near her ears, has strong front and back legs (doesn't grip food, but hangs on with front paws and back legs scramble like mad). It is the most frustrating thing to not know what is going on with your rat, to have the vet's shrug and say 'could be this, could be that', and you're treating based upon assumptions and trying to rule things out. It's just that I've always buried my rats in our special place for them in our yard; I wonder if the vet would return the remains afterwards for burial.
There's an ache every time we lose a rat. Here I've been thinking these last few months that I didn't know if I could stand going through this sort of thing any more after caring for rats for 13 years straight. Well...saw a little lonely boy alone in Petsmart this past weekend; watched his brothers get adopted over the last few weeks, and he was by himself; about 10 to 12 weeks old. I pined over him all week and finally went and got him two days ago - his name is Alistair - and I'm out another $350 having just purchased him his own Critter Nation cage; will get him a brother soon so he isn't alone.
So much for thinking I can go without rats. The losses always hurt so much - but the idea of not having rats is equally painful. I guess I'm going to have to do what you and everyone else here do when we lose one; grieve because we need to let the grief go, but celebrate the fact that THAT rat had a great life on earth with a person who loved them dearly. You loved your Butter Bean dearly; all of his photos reflect that, so be proud and somehow allow the joy of the life he had with you help heal the grief in your heart. You wouldn't have had it any other way. :heart: