[rawfeeding] Re: high BUN but normal Creatinine levels.....??

BUN is a crude reflection of kidney function - it can be affected by
diet, how soon after eating sampling is performed, and any condition
that is causing body proteins to break down (trauma, exertion...).
Creatinine is a more accurate indicator of renal function. Both
elevate after about 75% of renal function is lost, so if creatinine
is normal it is likely that your dog's kidney function is okay.

High protein levels in the diet can cause elevated BUN but I don't
honestly know if an increase in BUN means that the protein is *too*
high. I would recommend fasting your dog and repeating the blood
work one more time (I know the tests are wicked expensive...).
Animals with impaired renal function often do better with lower
dietary protein for a myriad of reasons but as far as I understand
the belief that high protein *causes* renal failure is incorrect.

Martha

--- In rawfeeding@yahoogroups.com, Jamie N <rawfurkids@...> wrote:
A few weeks ago, June 1st, 07 her blood work came back HIGH BUN
levels, but normal Creatinine levels.
>
> She said it was most likely dietary related since i feed the raw,
she thinks she is getting too much of a high protein diet and
kidneys not being able to handle it?? Im sorta confused since in
September just 8 months prior to now, her BUN and her Creatinine
levels were in the "normal" range, but now 2 tests within 3 weeks
shows her BUN to be high, but with normal creatinine.

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