Gynaecology & Obstetrics Lecithin Sphingomyelin ratio in amniotic fluid is used to assess the maturity of : A Fetal liver B Fetal lung C Placenta D Fetal kidney 💡 Explanation Lecithin Sphingomyelin ratio in amniotic fluid is used to assess the maturity of : ✓ Correct Answer: B. Fetal lung