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Objective : To study the relationship between induced labour, quantitative levels of fibronectin and the Bishop score. Study design : Vaginal fibronectin/Bishop score were estimated in 33 nulliparous women undergoing induction of labour for post-dates at the Department of Obstetrics and Gynaecology, Guy’s and St. Thomas’ Hospital London. Results : There was no significant relationship between either the fibronectin level or Bishop score and the duration of the latent phase ( R 2 =0.001; P =0.86 and R 2 =0.12; P =0.08, respectively). There was no relationship between the total prostaglandin dose and fibronectin level ( R 2 =0.03; P =0.39) nor any significant correlation between either the Bishop score or fibronectin level and the induction to delivery time ( R 2 =0.13; P =0.11 and R 2 =0.0006; P =0.97, respectively). Significant relationships were observed inversely between the total prostin dose and Bishop score ( R 2 =0.33; P =0.002), between the total prostin dose and latent phase ( R 2 =0.54; P =0.000009) and between Bishop score and the fibronectin levels ( R 2 =0.19; P Conclusions : Quantitative foetal fibronectin is not a useful test for inducibility at term.