We present the case report of a 49-year-old type 2 diabetes mellitus patient presenting with abdominal pain and black stool for 15 days. A proper workup of laboratory investigations helped us diagnose autoimmune hepatitis with anticentromere antibodies. The authors would like to highlight that screening AIH patients for anticentromere antibody is not mandatory but can be considered, especially in the presence of disease-related symptomatology for quicker, more accurate diagnosis and optimum management.