EPO and autoimmune hepatitis: There was no significant increase in hemoglobin mass after four consecutive days of AIH in the first group with no serum EPO collection (n = 18; Δ −8.2g [-24.3, 8.0]; p = 0.30), or in the second group for which we collected EPO (n = 12; Δ 12.6g [-19.9,45.0]; p = 0.41) (Figure 2).