found on the net:
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Depending on the lab's normal range, other breeds have a high of about 1.2 to 1.4 for their creatinine level, Greyhounds can normally run up to 2.1 (some say to 2.4) before it's considered to be possibly abnormal. If there is any doubt, run a second test on the urine called a specific gravity to help distinguish true kidney failure from a normal value. A specific gravity in the 1.008 to 1.012 range combined with a truly elevated creatinine requires further testing. BUN's can also run a little above other breed's normal.
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my question is: is this a reversable sitation and waht can I do to make it better?
we will slowly decrease the deramax and try to go on other thing... like tremadol...