Yes, there is a classic value for what point of function loss you start to see Cr/BUN increases. DVMD learned 66%. I learned 75%. Whatever. It's somewhere in there.
That wasn't the point.
Cdoconn said, in part:
... and other than "elevated," that's not a question you can answer. That was my point. Partly because it is HIGHLY variable from patient to patient, and partly because there are possible pre-renal or post-renal causes that would influence those numbers.
Baseline Creat is highly variable from one healthy patient to another (true in humans as well) - that's why trending information on it is important. You can have a patient with a 1.8 Cr that has clinically evidence kidney disease ... and you can have a healthy patient with a lifelong stable 1.8 Cr.
SDMA .......... has many critics (as well as proponents), including in human medicine. Our IntMed docs hate it. But it's probably too big of a topic for SDN.