Example of algorithm for clinical assessment of patients at risk of non-alcoholic fatty liver disease.36 37 44 . Example of algorithm for clinical assessment of patients at risk of non-alcoholic fatty liver disease.36 37 44 . CK-18 levels are not routinely available in many centres, so patients at intermediate and high risk have to be managed according to the high-risk arm of the algorithm (red arrows). ‘Screen’- blood tests to rule out common causes of liver disease; USS, ultrasound; MS, metabolic syndrome; IR, insulin resistance; HCC, hepatocellular carcinoma. Jessica K Dyson et al. Frontline Gastroenterol 2014;5:211-218 Copyright © BMJ Publishing Group Ltd & British Society of Gastroenterology. All rights reserved.