Anyways about the cat. I think they have figured out that he has FIV which is an autoimmune deficiency which leads to kitty AIDS.
It's sad but he is 15 1/2 years old. They did some xrays and bloodwork which all look pretty good actually except for the FIV test results. He has no major tumours that are visible in his body which I suppose is a good thing.
The vet thinks that Subway still has some quality life left to live. We can't be sure of how much but anything is possible. The only problem is that if he gets sick he has not much of an immune system to get him well.
So after paying tons of money to figure this out, we have brought Subway home to love him for whatever time he has left.