Angiogenic Serum Biomarker Levels Are Related to Onset of Labour in Low‐Risk Term and Post‐Term Pregnancies: A Prospective Observational Cohort Study

In low-risk term pregnancies, an anti-angiogenic profile is associated with shorter time to spontaneous delivery and increases from term to post-term consistent with physiological placental maturation. In induced labour, biomarkers reflect placental state but do not independently predict induction dynamics. Their potential role in late-term risk assessment warrants further investigation.