To collect relevant pregnancy outcome data, medical history, and blood samples from pregnant women carrying a singleton fetus undergoing non-invasive screening for early, preterm and term pre-eclampsia (PE) starting at 11 weeks 0 days to 14 weeks 0 days (≥11 - ≤14) gestation in support of validating the Labcorp Preeclampsia ScreenTM assay. Data will be used to examine assay performance and develop new testing methods.