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'''Clinical pathology''' results may lead to an indicative diagnosis. Roughly 85 - 95% of cases will show [[Lymphopenia|lymphocytopenia]] and [[eosinopenia]] and marked elevation of plasma alkaline phosphatase (ALP). Hypercholoesterolaemia has also been identified in 90% of dogs with this condition. Hyperglycaemia and hypernatraemia are sometimes noted, as is an increased urinary cortisol : creatinine ratio.
'''Clinical pathology''' results may lead to an indicative diagnosis. Roughly 85 - 95% of cases will show [[Lymphopenia|lymphocytopenia]] and [[eosinopenia]] and marked elevation of plasma alkaline phosphatase (ALP). Hypercholoesterolaemia has also been identified in 90% of dogs with this condition. Hyperglycaemia and hypernatraemia are sometimes noted, as is an increased urinary cortisol : creatinine ratio.
'''Liver cytology''': will show cytoplasmic vacuolation of hepatocytes consistent with the glycogen accumulation seen in steroid hepatopathies. A PAS stain can be used to identify the glycogen, which will stain bright pink.
Other specific diagnostic procedures include: '''ACTH Stimulation test''': measure cortisol before and 30-60 mins after i/v ''Synacthen'' administration. A positive result is initially high cortisol followed by a markedly elevated cortisol after stimulation (>600nmol/l).
Other specific diagnostic procedures include: '''ACTH Stimulation test''': measure cortisol before and 30-60 mins after i/v ''Synacthen'' administration. A positive result is initially high cortisol followed by a markedly elevated cortisol after stimulation (>600nmol/l).