GPT and chronic kidney disease: The laboratory results were unremarkable except for: a mild increase in liver enzymes, aspartate aminotransferase (AST) 59 U/l and alanine aminotransferase (ALT) 67 U/l; a known chronic renal insufficiency (creatinine 2.1 mg/dl); and a mild decrease in hemoglobin (Hb) 10.7 g/dl.