GPT and acute kidney injury: Of all patients, elevated GPT serum level up to 3 folds of normal upper limit (that is 36 U/L according to the lab’s reference) was found in 13 subjects (50.0%), and 10 subjects (38.5%) presented with acute renal failure [defined as an elevation of serum creatinine level greater than 1.5 folds of the normal value range (0.4 mg/dl–1.5 mg/dl) after drug intake].