5-Hydroxy Indole Acetic Acid (5-HIAA) – 24 Hour Urine Test ₹3500

Measures the total amount of 5-HIAA, the main breakdown product of serotonin, excreted in 24-hour urine. This test is commonly used to evaluate carcinoid tumors and serotonin-producing neuroendocrine tumors.

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Home Sample Collection Guidance Available

Quick Details

Test Price ₹3500

Fasting Required No (Diet restrictions may apply)

Sample Type 24-Hour Urine

Report Time 3–5 Working Days*

What is the 5-HIAA 24 Hour Urine Test?

The 5-Hydroxyindoleacetic Acid (5-HIAA) test measures the total amount of 5-HIAA excreted in urine over a 24-hour period. 5-HIAA is the primary breakdown product of serotonin, a hormone involved in mood regulation, digestion, and blood vessel function. Elevated levels can indicate carcinoid tumors, which produce excess serotonin. The 24-hour urine test provides a more accurate measurement of serotonin metabolism.

Who should take this test?

Patients with symptoms suggestive of carcinoid syndrome.
Individuals experiencing unexplained flushing, diarrhea, or wheezing.
Monitoring people diagnosed with neuroendocrine tumors.
Evaluation of abnormal serotonin metabolism.
Doctor-recommended follow-up after abnormal serotonin-related tests.

Preparation & Test Process

Fasting

Fasting is generally not required.

Sample Type

Complete 24-hour urine collection in a special container.

Dietary Restrictions

Avoid foods such as bananas, pineapple, walnuts, tomatoes, plums, and avocados for at least 24 hours before and during the test if advised.

Medication Note

Inform your doctor about medicines that may influence serotonin levels.

How to collect 24-hour urine (Step-by-step)

1) On Day 1, discard the first morning urine.
2) Collect all urine for the next 24 hours in the provided container.
3) On Day 2, include the first morning urine to complete the collection.
4) Return the container to the laboratory as instructed.

How to interpret results

Results are reported as total 5-HIAA excretion in mg/24 hours.

High levels may indicate carcinoid tumors or serotonin-producing neuroendocrine tumors.
Normal levels usually suggest normal serotonin metabolism.

Interpretation should always be done by a healthcare professional along with clinical findings and other diagnostic tests.

FAQs – 5-HIAA 24 Hour Urine Test

It provides a more accurate measurement of serotonin breakdown over a full day.

Yes, some foods rich in serotonin may affect the results and should be avoided before testing.

It is mainly used to detect or monitor carcinoid tumors and other serotonin-producing tumors.

No. It only requires collecting urine over a 24-hour period.

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Book 5-Hydroxy Indole Acetic Acid (5 Hiaa) – 24 Hour Urine Test in Chandigarh

Home collection · Digital reports · 24–48 hours

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Disclaimer: This page is for informational purposes only. Consult your doctor for medical advice. All tests processed with NABL-aligned quality standards.