GPT and COVID-19: Laboratory biochemical biomarkers have been described in COVID-19 for liver function (alkaline phosphatase (ALP), alanine transferase (ALT), aspartate transferase (AST), gamma-glutamyl transferase (GGT), bilirubin) and kidney function (blood urea nitrogen (BUN), chloride (Cl), creatinine, sodium (Na), glucose, potassium (K)).