CRP and acute adrenal insufficiency: <h4>Background</h4>C-reactive protein (CRP) concentration in serum or plasma is high in humans during adrenal crisis due to multiple mechanisms, however, the frequency and clinical relevance of high CRP concentrations in dogs with hypoadrenocorticism are unknown.<h4>Hypothesis/objectives</h4>To determine the frequency of high CRP concentrations in serum or plasma of dogs with hypoadrenocorticism.