Table 2. Fractional fetal DNA concentrations in maternal urine as calculated by the SNP approach.
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).