GPT and diabetes mellitus: Liver diseases (history of liver disease, hepatitis viral tests, aspartate aminotransferase, alanine aminotransferase, bilirubin, alkaline phosphatase, gamma-glutamyl transferase)Diabetes mellitus (history of diabetes, HbA1ca, glucose, urine glucose)Renal disease (history of renal disease, BUNb, creatinine)Cardiac disease (history of cardiac disease)Hypertension (history of hypertension)Allergic disease (history of allergic disease)Tuberculosis (history of tuberculosis)Cancer (history of cancer)Mental disorder (history of mental disorder)