GPT and COVID-19: We focused on Aspartate transaminase (AST), Alanine transaminase (ALT), Lactate dehydrogenase (LDH), Creatine kinase (CK), Myoglobin (MGB), Ferritin, CRP and D-dimer, all known to have a crucial role in COVID-19 onset and evolution and usually measured in the routine blood parameters of the Policlinico Umberto I hospital emergency section.