This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Renal physiology, Subject name: Physiology
[{'content': 'Which of the following is the least filtered in glomerules? (Which substance is least lost in urine) \nSelect and explain. \nA. Haemoglobin, B. Albumin (<150mg/24 hrs normally), C. Myoglobin, D. Inulin', 'role': 'user'}, {'content': "Answer: A \nExplanation: Hemoglobin is the least filtered in glomerules and when it is secreted in high levels it is called hemoglobinuria most common in porphyrias. Ref: Ganong's review of medical physiology; 24th edition; page no; 678", 'role': 'assistant'}]