| 孕期 | 例数 | 血清铁蛋白(μg/L) | 血清铁(μmol/L) | 血清铁饱和度(%) | 总铁结合力(μmol/L) |
| 孕早期 | 327 | 66.18 ± 58.21 | 22.03 ± 7.76 | 39.77 ± 15.13 | 57.58 ± 11.59 |
| 孕中期 | 245 | 31.66 ± 38.14a | 17.47 ± 7.47a | 26.63 ± 12.97a | 68.38 ± 14.34a |
| 孕晚期 | 454 | 20.33 ± 13.73ab | 16.76 ± 9.42a | 20.53 ± 11.33ab | 83.78 ± 13.06ab |
| F值 |
| 135.59 | 39.63 | 209.16 | 400.58 |
| p值 |
| 0.000 | 0.000 | 0.000 | 0.000 |