GPT and Wilson disease: These included serum ceruloplasmin and 24-h urine copper testing (values < 10 mg/dL and > 100 μg/24 h, respectively, favor the diagnosis of WD), examination for KF rings (e.g., optical tomography and slit lamp examination), checking for stigmata of liver disease, a comprehensive neurologic exam, assessing for a family history of WD, a brain MRI (if there are neurological findings), a complete blood count, and a hepatic panel (alkaline phosphatase [ALP], aspartate aminotransferase, alanine aminotransferase, and bilirubin).