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: Medicine
[{'content': 'Glycemic status over the last 2 weeks is best reflected by: \nSelect and explain. \nA. HbA1C, B. Fructosamine assay, C. Anhydroglucitol assay, D. All of the above', 'role': 'user'}, {'content': "Answer: B \nExplanation: The fructosamine assay (measuring glycated albumin) reflects the glycemic status over the prior 2 weeks. Alternative assays of glycemic control (including the 1,5 anhydroglucitol assay) should not be routinely used since studies demonstrating that it accurately predicts the complications of DM are lacking. Ref: Harrison's principle of internal medicine 17th edition, chapter 338.", 'role': 'assistant'}]