HP and fibrosis: Furthermore, patients with advanced fibrosis and with indeterminate risk presented lower haptoglobin levels compared to patients without liver fibrosis, as follows: 1.59 ± 0.51 (1.54 [0.54]) g/L vs. 1.65 ± 0.63 g/L vs. 1.91 ± 0.44 g/L, p = 0.0038 (Figure 2d).