Simplified Autoimmune Hepatitis (AIH) ScoreLoading...ANA/SMA/LMK1ANA or SMA < 1:40 or LKM1 < 1:40 or SLA negative0ANA or SMA ≥ 1:40+1ANA or SMA ≥ 1:80 or LKM1 ≥ 1:40 or SLA positive+2IgGNormal0Upper limit of normal+1> 1.1x upper limit of normal+2Liver histologyCompatible with AIH+1Typical of AIH+2Viral hepatitisPresent0Absent+2