To detect unique fetal biomarkers in maternal blood, Maron et al. studied whole blood and plasma gene transcripts that were common to term pregnant women and their newborns but absent or reduced in the mothers postpartum. Maternal blood samples were obtained immediately prior to cesarean delivery and 24 to 36 hours postpartum. Umbilical cord blood samples were obtained at delivery.

Tissue Condition Samples
Test umbilical cord blood umbilical cord plasma 3
Control umbilical cord blood antepartum maternal plasma 3
Gene Fold Change (log2) Significance Genus Species