So she gets bouts of diarrhea and has a BUN of 38?
Did I get this right?
Can you post her bloodwork?
The BUN could be up for something as simple as dehydration.
Why not just check some urine? If you can't get any, I'd just go ahead and let the vet do it. It isn't a big deal for them and you need answers...
I know hamburger is often recommended for stomach upset, but I have found that beef can cause more problems than what it's worth. How about switching your protein source? What intestinal testing has been done?
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