Fig 2. Serum Cr concentrations are illustrated for healthy cats, cats with kidney stones diagnosed antemortem at the time of diagnosis, and cats with kidney stones diagnosed postmortem at the time of death.

The dashed horizontal red line represents the upper limit of the reference interval for serum Cr concentration (2.1 mg/dL). Individual cats in each group are represented by a black dot. The horizontal blue line represents the mean serum Cr concentration for the group. The number and percent of cats ≥ 2.1 mg/dL in each group are also indicated.