GPT and hepatitis A virus infection: Liver elastography can be useful both in the diagnosis of liver fibrosis and in monitoring treatment, as in one study by Facciorusso et al. [48] In their study, they confirmed the relationship between antiviral therapy in patients with hepatitis B and liver stiffness and proved that antiviral therapy is associated with a progressive decrease in liver stiffness, particularly among patients with hepatitis without high baseline levels of alanine aminotransferase and viremia.