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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Which of the following urinary metabolites are most sensitive for diagnosis of pheochromocytomas
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The correct answer is  Answer is B (Metanephrines): The most sensitive test for diagnosis of pheochromocytomas is measurement of fractionated metanephrines in urine and free metanephrines in plasma.