GPT and COVID-19: Another study conducted in the same city, on a sample of 191 COVID-19 patients, found that the ALT levels were higher in non-survivors than in survivors, with a median (IQR) ALT level of 40.0 U/L (24.0–51.0) and 27.0 U/L (15.0–40.0), respectively (P ═ 0.005).