Figure 3From: A prospective assessment of the inter-laboratory variability of biochemical markers of fibrosis (FibroTest) and activity (ActiTest) in patients with chronic liver diseaseAlanine aminotransferase (ALT) and γ-glutamyl transpeptidase (GGT) variability according to laboratory and units of enzymatic expression: international units (IU) and upper limit of normal (UNL).Back to article page