GPT and Hyperbilirubinemia: Following the exclusion of all cats with evidence to support possible hepatic involvement (confirmed liver disease, ALT or ALP elevation, bile acid elevation, and/or hyperbilirubinaemia), 23/43 cats had detectable BA (median 16 μg/dL, IQR 26 μg/dL, range 7–267 μg/dL).