Equine liver disease in the field. Part 1: approach

Liver disease in adult horses is commonly identified during investigation of non-specific clinical signs such as general malaise, lethargy or weight loss. In some cases, disease may be advanced and irreversible by the time a diagnosis is reached. Serum biochemistry and tests of liver function form an important part of diagnosing liver disease but provide limited information regarding aetiology, severity and prognosis. Liver biopsy is recommended in the majority of cases to confirm the presence of disease, to guide therapeutics and to provide information regarding prognosis.