I am so glad Miss Kitty is feeling better and got to come home!
It's very easy to get confused about bloodwork numbers when you are upset and worried about a sick pet. I always ask for a copy of all test results. I also keep this link bookmarked (or you can download a copy):
A typical blood chemistry panel usually includes
Dehydration can really skew bloodwork results. Lady had HGE a few months ago and they thought she might be in acute kidney failure from her numbers.
Elevated Amylase indicates pancreatitis. I'm surprised the first vet didn't pick up on that.