The 24-hour Urine Normetanephrine test measures normetanephrine levels in urine to help diagnose adrenal gland tumors such as pheochromocytoma.
The 24-hour Urine Normetanephrine test is used to measure the total amount of normetanephrine excreted in urine over a 24-hour period. Normetanephrine is a metabolite of norepinephrine, a hormone produced by the adrenal glands.
Elevated levels of normetanephrine may indicate the presence of adrenal tumors such as pheochromocytoma or paraganglioma. These tumors can lead to excessive hormone production, causing symptoms like high blood pressure, headaches, sweating, and rapid heart rate.
The purpose of this test is to