Normetanephrine Free in Urine

Among the wide range of diagnostic tests offered by IntroLab in Belgrade is the specialized normetanephrine free urine test. This test accurately measures the level of normetanephrine, a metabolite of norepinephrine, in the urine.

What is Normetanephrine?

Normetanephrine is a byproduct of the metabolism of norepinephrine (noradrenaline), a hormone and neurotransmitter. Norepinephrine is produced in the adrenal glands, specifically in the medulla. When released into the bloodstream, it travels to various parts of the body, triggering physiological responses. A portion of norepinephrine is converted into normetanephrine, which is then excreted in urine. This makes normetanephrine a marker of norepinephrine production, a hormone that plays a central role in the stress response and in regulating essential bodily functions.

What is free normetanephrine in urine?

“Free” refers to normetanephrine being in its unbound form in the urine. The free normetanephrine urine test measures the amount of this metabolite in the urine, which helps in assessing the norepinephrine levels in the body.

Importance of measuring free normetanephrine in urine

This test is important for the early diagnosis and monitoring of certain health conditions, such as pheochromocytoma, a rare tumor of the adrenal gland that can lead to increased levels of norepinephrine and normetanephrine. It is also valuable in diagnosing and tracking autonomic dysfunctions and specific metabolic disorders.

When is this test needed?

A doctor might suggest this test if you exhibit symptoms like high blood pressure, rapid heartbeat, headaches, sweating, and trembling. These symptoms are linked to pheochromocytoma or other autonomic nervous system disorders.

Types of test

Besides the free normetanephrine urine test, other related tests, such as metanephrine test, can help assess adrenal gland function. The doctor will select the most suitable test based on your symptoms and medical history.