Medicine The MOST sensitive 24 hour urinary biochemical test to suggest pheochromocytoma among the following is A Vanillylmandelic acid B Fractionated metanephrines C Total metanephrines D Catecholamines 💡 Explanation The MOST sensitive 24 hour urinary biochemical test to suggest pheochromocytoma among the following is ✓ Correct Answer: B. Fractionated metanephrines