Research Communications of the 27(th) ECVIM-CA Congress: Intercontinental, Saint Julian's, Malta, 14th to 16th September 2017

Hyperthyroid cats were older (P = 0.0005) and had a lower weight (P < 0.0001) than control cats. In hyperthyroid cats Crea at diagnosis was positively correlated with SDMA (r = 0.47, P = 0.04) and negatively correlated with TT4 (r = À0.46, P = 0.04). No correlation was found between SDMA and TT4 at diagnosis (P = 0.10). In hyperthyroid cats weight was positively correlated with creatinine (r = 0.51, P = 0.004) but not with SDMA (P = 0.39). There was no difference for Crea between hyperthyroid cats and controls at diagnosis (P = 0.3). Creatinine significantly increased (P = 0.03) after treatment despite body weight did not (P = 0.13). No difference was found when comparing SDMA in hyperthyroid and control cats at diagnosis (P = 0.11) nor after treatment (P = 0.86). Five hyperthyroid cats had SDMA value higher than reference range at diagnosis. Follow-up after treatment was available for 2/5 only; in these 2 cats when TT4 was normal Crea was still normal and SDMA was increased in one. 2/5 cats showed increased creatinine when TT4 normalized, but none of them had high SDMA at diagnosis.