Join Date: Sep 2007
Dogs Name: Ori AKA Harold DogDog (Hairy Dog), RIP Caesar, Katana, Kip, Capri
Titles: DogDog Mouthe Extraordinaire; Kip Mr. Behavior; Capri Mis-Behavior
Dogs Age: DogDog 3 yrs?; RIP Kip 11 yrs; Capri 7 yrs; Katana 9 yrs; Caesar 13 yrs
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Individual labs may have somewhat different normal values depending on their own particular processes--differences in testing equipment, chemical reagents used, and analysis techniques. So they include their ranges on the report to help whoever is interpreting the test know what to compare the results to. That's why I asked for the normal values for these particular results. That being said, for common tests like BUN and creatinine, all labs should have reference ranges that are very close to each other.
Differences in muscle mass between breeds can make a difference in normal creatinine values too. Creatinine can be elevated in a muscular dog as opposed to one of a less muscled breed and still be normal. An elderly dog who is losing muscle mass may actually be starting to have problems that aren't picked up because his lack of muscle lowers the test results.
The SDMA test is marketed as being more sensitive to kidney problems than either the creatinine or BUN test, and as being able to pick up early disease before the BUN or creatinine is elevated. The company which produces it says that >14 is considered to indicate a problem which needs more investigation. It is a relatively new test however; I don't know if they have a really firm handle on exactly how much they should rely on these test results to specifically determine kidney disease. And it can apparently be elevated with heart problems too.
Have you had a urinalysis done on Katie? Kidneys tend to spill protein if they are damaged, so looking at those test results may help clarify the picture a bit.
A lot of times, it can more useful to look at changes in test result values over time, than to just rely on comparing the results to normal values, because every dog may start with a different baseline.
What does your vet say?
Last edited by melbrod; 06-01-2020 at 09:37 AM.