LVRN and preeclampsia: In this study we aimed to 1) serially measure plasma levels of laeverin in healthy women during the second half of pregnancy and postpartum to establish longitudinal reference ranges, 2) determine whether laeverin plasma levels measured at 22–24 weeks are different in women who later develop preeclampsia compared to controls, and 3) compare laeverin protein expression in placenta and umbilical vein serum in healthy and preeclamptic pregnancies at birth.