| Biomarkers | References values | References |
| CRP | <5 mg/l | [19] |
| ferritin | Male: 27 to 365 ng/ml | [20] |
| Female: 13 to 148 ng/ml | ||
| sTfR | 2.2 to 5 mg/l | [21] |
| sTfR-F index | >2 | [22] |