. Author manuscript; available in PMC: 2014 Sep 27.

Published in final edited form as: Clin Liver Dis. 2012 Jun 27;16(3):487–504. doi: 10.1016/j.cld.2012.05.006

Table 2.

Classification of Non-alcoholic Fatty Liver Disease by NAFLD Activity Score (NASH CRN) [25]

Histologic Finding	Grade

• Steatosis	0 – 3
• Lobular inflammation	0 – 3
• Hepatocellular ballooning	0– 2

Maximum Score	8

NASH requires a score of ≥ 4 with at least 1 point from ballooning injury^†

^†

Used in some clinical studies to diagnose NASH. However, it was developed as a scoring system to be used in clinical trials not to diagnose NASH based on a number. [33]