Abnormal a-fetoprotein is seen in
Answer is D (All of the above) All conditions mentioned in options are associated with abnormal Alpha fetoprotein levels. Open Neural tube defects and multiple gestations (twin pregnancy) are associated with elevated alpha protein levels Chromosomal trisomies (trisomy 18) show decreased alphaprotein levels.
Trisomy 18
Twin pregnancy
Neural tube defect
All of the above