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
During first trimester of pregnancy risk of fetal malformation in a pregnant woman with insulin dependent diabetes is best predicted by : 
Select and explain. 
A. Blood sugar values, B. Glycosylated haemoglobin levels, C. Serum alpha fetoprotein levels, D. Serum unconjugated estriol levels
B: Glycosylated haemoglobin levels
Answer: B: Glycosylated haemoglobin levels 
Explanation: Glycosylated haemoglobin levels