GPT and COVID-19: FIB-4 is usually used to anticipate the requirement for mechanical ventilation or ICU admission.27 The index incorporates age and aspartate transaminase, both significantly related to liver fibrosis,10,36 and extensively associated with poor COVID-19 outcomes such as death.37,38 Among the components of the FIB-4 index, ALT, AST, and age were significantly higher in the deceased group.