This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Medicine
[{'content': 'The Lab ivestigationofpatient shows|T3,|T4, &|TSH.It cannotbe- \nSelect and explain. \nA. Primaryhypothyrodism, B. Pan-hypopmuarlsm, C. liverdisease, D. None of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans is option 1 - primary hypothyroidism The single most useful measurement for assessment of hypothyroidism is serum TSH. It is increased in primary hypothyroidism. To compensate the reduced T3 and T4 there is a hypersecretion of TSH. Ref Harrison 19 /2289', 'role': 'assistant'}]