5-OH INDOL ACETIC ACID (5HIAA), 24 HRS URINE
MRP - ₹ 3,800
What is a 5-OH INDOL ACETIC ACID (5HIAA), 24 HRS URINE?
5-Hydroxyindoleacetic Acid (5-HIAA), 24-Hour Urine is a test that measures the amount of 5-HIAA, the main breakdown product of serotonin, excreted in urine over 24 hours. The test is primarily used to evaluate suspected serotonin-producing neuroendocrine (carcinoid) tumors. It may be recommended when symptoms such as persistent flushing, unexplained diarrhea, abdominal discomfort, or wheezing suggest excess serotonin production.
Additional Information
| Also known as/ Other names: | 5-HIAA urine test, 5-Hydroxyindoleacetic acid test, Urinary 5-HIAA (24h collection), 5-HIAA, 24-hour urine, 5-Hydroxyindoleacetic acid, quantitative urine, Serotonin metabolite test (urine) |
| Parameters: | 1 |
| Recommended for: | M/F/Others |
| Sample Type: | 24 Hrs. Urine |
| Patient Preparation: | Strictly avoid banana, kiwi, walnut, avocado, brinjal, pineapple, plum, tomato & drugs like Fluorouracil, Melphalan, Paracetamol & Acetaminophen, Heparin, L-dopa, Reserpine, Salicylates, Chlorpromazine, Imipramine, Isoniazid, MAO inhibitors, Phenothiazines, Promethazine, alcoholic beverages, caffeine, tea/coffee, tobacco and strenuous exercise at least 72 hrs before & during specimen collection. |
| Reports: | 4 days |
FAQs
5-HIAA is a metabolite produced when the body breaks down serotonin. Measuring it in urine provides an indirect indication of serotonin metabolism.
Neuroendocrine tumors are tumors arising from cells that have characteristics of both nerve cells and hormone-producing cells. Some can produce excess serotonin or other hormones.
No. Elevated 5-HIAA can have several causes, including certain foods, medications, and medical conditions. Additional investigations are needed to determine the underlying cause.
Not always. Some tumors do not produce significant amounts of serotonin or may release it intermittently. Your healthcare provider may recommend other tests if clinical suspicion remains.
Yes. Several medications can interfere with 5-HIAA testing. Provide your healthcare provider with a complete list of medicines and supplements before the test.
