| Parameter | Donor type | P-value | |
| VNRD | FRD | ||
| Haemoglobin (g/dl) | 13.5 ± 0.00 | 14.10 ± 2.40 | 0.01 |
| Haematocrit (%) | 43.5 ± 2.0 | 45 ± 3.0 | 0.01 |
| Serum ferritin (ng/ml) | 34.88 ± 0.00 | 74.12 ± 45.20 | 0.001 |