GPT and metabolic dysfunction-associated steatotic liver disease: However, when the NAFLD group was stratified based on the degree of steatosis (ultrasound grading) and compared with mean ALT level, the ALT level increased as the ultrasound grading of liver steatosis increased, after adjusting for composite of GH and PE (p<0.05)(Adjusted R2 = 0.023)(Table 4).