This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
[{'content': 'All of the following can be used for establishing antenatal diagnosis except : \nSelect and explain. \nA. Fetal blood, B. Maternal blood, C. Amniotic fluid, D. Decidua', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Answer is D (Decidua) : Decidua has not been mentioned to play any role in antenatal diagnosis Maternal Blood Can be used as in estimation of AFP (MSAFP) : MSAFP level is elevated in a number of conditions. - wrong gestational age - open neural tube defects Q - multiple pregnancy Q - Intra uterine fetal death Q - Renal anomalies Q Amniotic fluid Forms on impoant tool for antenatal diagnosis. Following tests may be performed on amniotic fluid : - estimation of Alpha feto-protein (AFP). - culture and chromosomal study of desquamated fetal cells in the amniotic fluid. Fetal Blood May be used for - fetal anemia - Bleeding disorders - Rheusus disease - Non-Immune Hydrops Fetalis', 'role': 'assistant'}]