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| Case | Fetal%a | ||
| Before delivery | 24 hours after delivery | 1 month after delivery | |
| 6849 | 1.92% | <LODb | − |
| 6918 | 4.70% | <LOD | − |
| 7401 | <LOD | <LOD | − |
| 7413 | 4.39% | <LOD | − |
| 7418 | <LOD | <LOD | − |
| 7482 | 4.73% | <LOD | − |
| 8542 | 3.85% | 1.38% | <LOD |
 |
LOD, limit of detection. Samples with proportion of fetal-allele fragments lower than the LOD were marked as <LOD (Table S3 and Methods S1).
