Originally Posted by otto
Thank you for sharing your thoughts. There is no "big deal" being made of "this issue". I want to educate myself, and understand certain things. It's as simple as that.
I wish to gather information, knowledge and understanding. I prefer to know and understand as much as possible about my cats' health. It's important to me to be able to discuss things with my vet, sharing knowledge and learning, to the benefit of my cats' health. The more I know, the less I worry, and the better the care my cats get.
Of course! You are to be commended for learning as much as you can about how to keep your kitties as healthy as possible.
I can't agree that a big deal isn't being made of this issue. This thread is proof of that. You are obviously still concerned that the higher BUN, creatinine and hematocrit values of a cat fed a high protein diet might cause some complication with your vet in diagnosing your cats. I'm trying to explain why that fact is causing you, and possibly others, needless worry.
I don't feel I have made my point clear. The fact has been brought up that cats fed a high protein diet have higher BUN, creatinine and hematocrit values in their blood workups. As a result of that fact people, such as you, have gotten the idea that they need to "warn" their vets of that fact so that the vet doesn't made a erroneous diagnosis of a kidney problem based on the higher values. That is an unfounded concern.
As the study Laurie posted indicated a cat fed a high protein diet may have slightly higher BUN, creatinine and hematocrit values that that they should still be within the normal range. The blood work of any cat, regardless of that it is fed, can come up with values at the upper end of the ranges. That is why what is "normal" is a range and not a specific value. Also, as has been pointed out in this thread, the BUN, creatinine and hematocrit values being outside of the normal range will not cause a vet to diagnosis a kidney problem. They are just clues that further testing may be needed. And no vet should look at those high values and say "Well, the cat is fed a high protein diet so I'll just assume the kidneys are OK" without doing further testing.
Bottom line, if a cats blood work reveals those values outside of the normal ranges, a kidney problem should still be considered a possibility whether the cat is fed a high protein diet or not. In other words, that the cat is fed a high protein diet and that such a diet can result in slightly higher BUN, creatinine and hematcrit values simply isn't relevant.
OK, I'll stop pounding on this topic now. I'm sure everyone has had enough of it. From me anyway.
I hope you have an uneventful visit with your vet!