24 HR URINARY NOR METANEPHRINES

The adrenal glands respond to stress by producing catecholamine hormones, boosting blood flow to vital organs like the brain and heart, gearing the body for a fight-or-flight response. These hormones heighten alertness, increase heart rate, elevate blood pressure, and enhance muscle strength while redirecting blood flow from the skin. A 24-hour urinary catecholamine test assesses hormone levels in urine, crucial for confirming adrenal gland tumor diagnoses like pheochromocytomas and paragangliomas. It serves as a follow-up to inconclusive urine metanephrine or plasma free metanephrine tests and aids in monitoring treatment progress. This test is particularly recommended for individuals exhibiting sudden symptoms like rapid heart rate, sweating, flushing, severe headaches, unresponsive high blood pressure, and tremors, offering valuable diagnostic insights.