Gynaecology & Obstetrics Increased levels of which of the following in amniotic fluid is an indicator of neural tube defect in the fetus : A Acetylcholinesterase B Butyrylcholinesterase C Pseudocholinesterase D Phosphatidyl esterase 💡 Explanation Increased levels of which of the following in amniotic fluid is an indicator of neural tube defect in the fetus : ✓ Correct Answer: A. Acetylcholinesterase