Visited him this morning (what a fiasco, 90 minutes, at least 60 of which was waiting for people to come talk to me).
Overnight, blood panel came down to 100% normal levels. Which means his kidney function is perfectly fine and the elevated levels were due to dehydration. And he can come home.
But that also means that it’s the enlargement/inflammation of his small intestine that was causing him to not eat or drink. A proper biopsy will be close to $2K and if it’s cancer, removing the affected section will be another $4K-$6K surgery but it’s not curable.
Best case, it’s an acute irritable bowel condition and steroids can help get that under control and bring his appetite back. Worst case, it’s the Big C and steroids will help with the inflammation and appetite. Either way, we’re looking at pain management and getting him back to a somewhat more normal version of himself, but it’s very likely that we’re only talking about buying a few more months.