HP and Gilbert syndrome: In the case of a liver biopsy, it may be due to sampling error or observer error, and in the case of a FibroTest, the cause of false positive errors may be increased values of the algorithm’s components: for clinical reasons (e.g., an increase in bilirubin in Gilbert’s syndrome, or an increase in α2-macroglobulin in inflammation) or from laboratory tests (e.g., an increase in unconjugated bilirubin and a decrease in haptoglobin in hemolysis).