5hidroxiindolacético

5-hydroxyindoleacetic acid, often abbreviated as 5-HIAA, is a chemical compound that plays a role in human metabolism. It is the primary metabolite of serotonin, a neurotransmitter that influences mood, sleep, appetite, and other bodily functions. When serotonin is broken down in the body, it is converted into 5-HIAA, which is then excreted in the urine.

The measurement of 5-HIAA levels in urine is a diagnostic tool used by medical professionals. Elevated levels of 5-HIAA can be indicative of certain medical conditions, most notably carcinoid tumors. These rare tumors, often found in the digestive tract, can overproduce serotonin, leading to increased amounts of 5-HIAA in the urine. Other factors, such as certain medications and dietary intake of foods rich in serotonin (like bananas and walnuts), can also affect 5-HIAA levels.

Conversely, significantly low levels of 5-HIAA might suggest impaired serotonin production or metabolism, although this is less commonly screened for than elevated levels. Doctors typically use 5-HIAA urine tests in conjunction with other diagnostic procedures and clinical evaluations to reach a diagnosis. It is important for individuals undergoing this test to follow specific dietary and medication instructions provided by their healthcare provider to ensure accurate results.