Gynaecology & Obstetrics Cut off value of length of cervix at 24 weeks of gestation for prediction of preterm delivery is A 0.5 cm B 1.5 cm C 2.5 cm D 3.5 cm 💡 Explanation Cut off value of length of cervix at 24 weeks of gestation for prediction of preterm delivery is ✓ Correct Answer: C. 2.5 cm