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Distribution of Samples with Number of Y-Biomarker
| Weeks of Pregnancy | Source of DNA | Number of Sample | Failed to Detect | 1Y-Biomarker | ≥2Y-Biomarker | Female |
|---|---|---|---|---|---|---|
| ≤13 weeks | cffDNA | 12 | 6 | 2 | 0 | 4 |
| Fetal DNA from fNRBCs | 12 | 0 | 1 | 7 | 4 | |
| >13 weeks | cffDNA | 61 | 6 | 23 | 26 | 6 |
| Fetal DNA from fNRBCs | 61 | 0 | 25 | 31 | 5 |
