24 HR URINARY METANEPHRINES

This test evaluates metanephrine and normetanephrine levels released into urine over 24 hours, serving as key indicators of catecholamine breakdown from hormones like epinephrine and norepinephrine. These substances, produced by the adrenal glands and sympathetic nervous system, respond to stress, aiding in nerve signal transmission, energy release, lung airway dilation, pupil enlargement, and blood vessel constriction. Post-function, catecholamines degrade into metanephrine, normetanephrine, and other compounds, eventually excreted in urine. Understanding these metabolite levels helps assess adrenal function and stress response regulation