Raised maternal serum inhibin A concentration at 10 to 14 weeks of gestation is associated with pre‐eclampsia

Maternal serum inhibin A and free beta human chorionic gonadotrophin (beta-hCG) were measured in 759 chromosomally normal, pregnant women at 10-14 weeks of gestation. There were nine who subsequently developed pre-eclampsia and in these women the maternal serum inhibin A concentration was significantly higher than in the normotensive controls.