Hi again Dina,
Your vet probably didn't mention pancreatitis either because Orville isn't necessarily showing some classic symptoms, primarily abdominal pain on palpation or because nothing was flagged on bloodwork or ultrasound. However, the reasons I mentioned it:
1. His decreased appetite. Is he showing any signs of nausea, like lip-licking, or going to the food bowl and then walking away, that would explain it?
2. Bloodwork won't necessarily tell what's going on, especially if it's chronic pancreatitis, not acute. Kitties with chronic panc have flare-ups and periods where they do well. At those times, bloodwork may come back normal.
3. I believe (but I'll double-check) that an ultrasound can tell you if there is pancreatitis but can't rule it out.
4. It seems that pancreatitis is very underdiagnosed. It is very common in cats with concurrent chronic kidney disease, and Orville's kidney values are elevated. My vet didn't even bother testing my advanced CKD kitty; he just assumed that she had it and treated as if she did.
If he continues to eat less, lose weight, starts vomiting, or shows signs of nausea or of pain (withdrawing, growling, not wanting his tummy touched), I'd bring him in, and if the vet doesn't suggest testing for panc, ask for the spec fPL (not the Precision PSL).
I know that you didn't ask about any of this, but with the food question, and Orville showing signs of early CKD, it's important to know if he has pancreatitis and/or hyperT. The tests only require a blood draw so are less expensive and less risky than a biopsy (which will require anesthesia and will be, to some extent, invasive). And those conditions may change what the best diet would be.
If it is IBD, you might consider is a raw diet. That's worked well for some kitties with IBD or other GI issues.
Last edited by spirite; 09-19-2018 at 04:13 PM.