Gynaecology & Obstetrics In which of the following conditions would maternal serum alpha-fetoprotein values be the highest: A Down's syndrome B Omphalocele C Gastroschisis D Spina bifida occulta 💡 Explanation In which of the following conditions would maternal serum alpha-fetoprotein values be the highest: ✓ Correct Answer: C. Gastroschisis