GPT and COVID-19: He tested negative for COVID-19, and his liver function test showed alkaline phosphatase (ALP) of 203 unit/L, alanine transaminase (ALT) of 96 unit/L, aspartate aminotransferase (AST) of 140 unit/L, total protein of 11.4g/dl, and albumin of 3.2d/dl.