GPT and Hepatic fibrosis: The FIB4 index, originally proposed to help assess hepatic fibrosis in patients with human immunodeficiency virus (HIV) and hepatitis C virus (HCV) coinfection [22], can be calculated from age and three parameters obtained in routine laboratory assessments: alanine aminotransferase (ALT), aspartate aminotransferase (AST), and platelet count.