Predictive Performance of a Seven-Plex Antibody Array in Prenatal Screening for Down Syndrome

Table 1

Correlations () between measurement methods for PAPP-A and fβ-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