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4. Diagnosing Anencephaly During Pregnancy

Doctors can diagnose anencephaly during pregnancy through prenatal screening tests.

  • Blood Test: Elevated levels of alpha-fetoprotein, a liver protein, can indicate anencephaly.
  • Ultrasound: Sometimes the physical signs of anencephaly can be seen on a sonogram.
  • Amniocentesis: During an amniocentesis, fluid is drawn from the amniotic sac and studied for markers of abnormal development. Elevated levels of acetylcholinsterase and alpha-fetoprotein are related to neural tube defects.
  • Fetal MRI Scan: The physical signs of anencephaly may be apparent on a fetal MRI scan as it produces more detailed photos than an ultrasound.

diagnosing Anencephaly vm / Getty Images

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