Comparison of copper metabolism parameters and hemoglobin. The linear scales in A, B, D and the logarithmic scale in C: Ceruloplasmin (g/L), serum-copper (μmol/L), urine-copper (μmol/24 h), hemoglobin (g/dL). FWD: acute liver failure secondary to Wilson disease; ALF: acute liver failure. aP ≤ 0.001).