Comparison of 18 same sex sib pairs homozygous for the C282Y mutation
| Transferrin saturation (%) | Serum ferritin (μg/l) | Serum iron (μmol/l) | |
| Correlation | r=0.47 | r=0.10 | r=0.23 |
| p=0.07 | NS | NS | |
| Mean difference | 14 [0–35] | 1026 [90–4243] | 7.5 [0–20] |
| t=5.1 | t=3.12 | t=6.1 | |
| p=0.00017 | p=0.0065 | p=0.00002 |