This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Diagnosis in Obstetrics, Subject name: Gynaecology & Obstetrics
[{'content': 'Appropriate material for antenatal diagnosis of genetic disorders includes all of the following except \nSelect and explain. \nA. Fetal blood, B. Amniotic fluid, C. Chorionic villi, D. Maternal urine', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. is d, i.e. Maternal urineRef. Dutta Obs. 9/e, p 103Prenatal genetic diagnosis can be made by:Chorion villi samplingAmniocentesis: Amniotic fluidCordocentesis:Fetal blood tests like Triple test/Maternal serum alpha fetoprotein done on maternal blood.', 'role': 'assistant'}]