Research Article
Predictive Performance of a Seven-Plex Antibody Array in Prenatal Screening for Down Syndrome
Table 1
Correlations (
) between measurement methods for PAPP-A and f
β-hCG. All
-values have corresponding
values < 10
−8.
| | Serum concentrations PAPP-A | Log-MoM values PAPP-A | | Array, 4PL | Array, scaled | AutoDELFIA | Array, 4PL | Array, scaled | AutoDELFIA |
| Array, 4PL | 1 | 0.98 | 0.90 | 1 | 0.97 | 0.82 | Array, scaled | 0.98 | 1 | 0.88 | 0.97 | 1 | 0.79 | AutoDELFIA | 0.90 | 0.88 | 1 | 0.82 | 0.79 | 1 |
| | Serum concentrations fβ-hCG | Log-MoM values fβ-hCG | | Array, 4PL | Array, scaled | AutoDELFIA | Array, 4PL | Array, scaled | AutoDELFIA |
| Array, 4PL | 1 | 0.99 | 0.95 | 1 | 0.99 | 0.92 | Array, scaled | 0.99 | 1 | 0.95 | 0.99 | 1 | 0.93 | AutoDELFIA | 0.95 | 0.95 | 1 | 0.92 | 0.93 | 1 |
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