Home Test5 Hydroxyindoleacetic Acid Spot Urine Test

5-Hydroxyindoleacetic Acid (5-HIAA), Spot Urine Test: Booking, Price, and Results

About 5-Hydroxyindoleacetic Acid (5-HIAA), Spot Urine Test: Booking, Price, and Results

Field	Value
Also Known As	5-HIAA, HIAA, 5-Hydroxyindoleacetic Acid, Serotonin Metabolite Test
Sample Type	Spot (random) urine
Fasting Required	No fasting required; avoid serotonin-rich foods for 48 to 72 hours before collection
Report Time	5 Days
Recommended For	Adults of both genders with symptoms suggestive of carcinoid or neuroendocrine tumours
Price	Starting at ₹4,200

What is a 5-Hydroxyindoleacetic Acid (5-HIAA), Spot Urine Test?

The 5-Hydroxyindoleacetic acid (5-HIAA) spot urine test measures the level of 5-HIAA in a urine sample. 5-HIAA is the main breakdown product of serotonin, a chemical messenger in the body. When the body produces too much serotonin, higher levels of 5-HIAA appear in the urine.

This test is also known as the 5-HIAA test or Serotonin Metabolite Test. Doctors order it when a patient has symptoms that suggest a serotonin-producing tumour. A spot (random) urine sample is used for collection.

What Does a 5-Hydroxyindoleacetic Acid (5-HIAA), Spot Urine Test Measure?

The 5-HIAA test procedure measures a single substance in urine. The table below explains what it is and why it matters.

Parameter	What it is	Why it Matters
5-HIAA (urine)	The main breakdown product of serotonin	Raised levels may point to serotonin-producing tumours in the digestive tract

Because serotonin itself is difficult to measure directly, 5-HIAA acts as a useful marker. The spot urine result is expressed as a ratio to creatinine, a waste product in urine that helps account for differences in urine concentration.

Why is a 5-Hydroxyindoleacetic Acid (5-HIAA), Spot Urine Test Done?

A doctor may order this test when a patient reports certain physical symptoms or when a tumour is already being monitored. The sections below cover the key reasons.

Common Symptoms That May Require This Test

The following symptoms may prompt a doctor to request a 5-HIAA test:

Facial flushing (sudden warmth and redness of the face, neck, or chest)
Chronic or persistent diarrhoea
Wheezing or difficulty breathing
Rapid heartbeat or palpitations
Abdominal pain or cramping
Shortness of breath without a clear cause

Conditions This Test Can Help Detect

This test can help identify several conditions. These include:

Carcinoid tumours: slow-growing tumours usually found in the digestive tract
Carcinoid syndrome: a condition caused by tumours that release excess serotonin into the bloodstream
Midgut carcinoid tumours affecting the small intestine, ascending colon, or appendix
Neuroendocrine tumours (NETs) that secrete serotonin

5-Hydroxyindoleacetic Acid (5-HIAA), Spot Urine Test for Chronic Disease Monitoring

The 5-HIAA test plays a useful role in tracking carcinoid and neuroendocrine tumours over time. When a patient is receiving treatment, falling 5-HIAA levels suggest the treatment is working, while rising levels may indicate the opposite. Regular monitoring with this test also helps doctors assess the risk of disease progression.

How to Prepare and What to Expect

Good preparation is essential for accurate results. The steps below explain what to do before and during sample collection.

Do You Need to Fast?

No fasting is required for this test. However, dietary restrictions do apply. You must avoid serotonin-rich foods for at least 48 hours before and during sample collection. If other blood tests are ordered alongside this one, ask your doctor whether fasting is needed for those.

Practical Tips Before Your Test

The following steps will help ensure your results are accurate:

Avoid serotonin-rich foods for 48 to 72 hours before collection: these include bananas, avocados, pineapple, tomatoes, kiwi, plums, dates, melons, grapefruit, plantains, and all nuts
Avoid caffeinated drinks (tea, coffee) and dark chocolate for the same period
Tell your doctor about all medications you are taking; some drugs (including paracetamol, certain cough syrups, and some antidepressants) can raise or lower 5-HIAA levels
Bring a detailed clinical history, including your symptoms, previous test results, and relevant medical records, as this is required for the test
Stay well hydrated in the lead-up to collection

Step-by-Step Procedure

The spot urine collection process is straightforward. Here is what to expect:

Collect a urine sample in the sterile container provided by the laboratory.
The first morning urine sample is often preferred, as it gives a more consistent result.
Label the container clearly with your name, date, and exact time of collection.
Keep the sample cool during transport and deliver it to the laboratory promptly.
The lab will test the 5-HIAA level alongside a creatinine measurement to express the result as a ratio.
The sample is stored under refrigeration and processed using an EIA (enzyme immunoassay) method.

Factors That Can Affect Accuracy

Several factors can influence your 5-HIAA test result. These include:

Eating serotonin-rich foods or taking supplements containing serotonin before the test
Consuming caffeinated food or drinks within 48 hours of collection
Certain medications that raise or lower serotonin metabolism
Improper storage or delayed delivery of the urine sample
Kidney (renal) disease, which can lower 5-HIAA levels in urine
Malabsorption conditions such as coeliac disease, which can raise 5-HIAA independently of any tumour

Understanding Your 5-Hydroxyindoleacetic Acid (5-HIAA), Spot Urine Test Results

Your results will be reviewed by your doctor alongside your symptoms and medical history. The table below shows general reference values for guidance.

Parameter	Normal Range
5-HIAA, 24-hour urine	2 to 9 mg/24h (10.4 to 46.8 µmol/24h)
5-HIAA, spot urine (ratio to creatinine)	Less than 5.3 µmol/mmol creatinine

Note: Levels in females are typically lower than in males. Ranges may also vary slightly between laboratories.

These ranges are general guidelines. Your doctor will interpret your results based on your age, health history, and other factors. Always consult a qualified healthcare professional for personalised medical advice.

Results During Special Conditions

Certain health conditions can affect how results are interpreted:

Renal disease: kidney problems may cause 5-HIAA levels to appear falsely low, even when a tumour is present.

Malabsorption conditions: coeliac disease, Whipple disease, tropical sprue, and cystic fibrosis can raise 5-HIAA levels without any tumour being present.

Intermittent serotonin secretion: some neuroendocrine tumours release serotonin at irregular intervals, which means a single spot urine sample may not capture a raised level.

How to Maintain Healthy Levels

The following general tips are relevant for anyone undergoing monitoring with this test:

Follow a balanced diet and avoid serotonin-rich foods in the days leading up to each test.
Always inform your doctor about any new or changed medications before sample collection.
Attend follow-up appointments as scheduled; repeat testing may be needed if results are borderline.

Lupin Diagnostics 5-Hydroxyindoleacetic Acid (5-HIAA), Spot Urine Test Price and Home Collection

The 5-HIAA test is available at Lupin Diagnostics starting at ₹4,200, with home sample collection available across cities in India.

City	Approximate Price (₹)
BHOPAL	4200
CHENNAI	4200
HYDERABAD	4200
KOLKATA	4200
NAVI MUMBAI	4200
PUNE	4200

Prices are indicative and may vary by location. Please confirm the current price at the time of booking.

How to Book

Booking your 5-HIAA test online is simple. Follow these steps:

Select the test on the Lupin Diagnostics website.
Choose your city and preferred time slot.
Opt for home sample collection by a certified phlebotomist, or visit your nearest Lupin Diagnostics centre.
Receive your report via email or WhatsApp within the stipulated turnaround time.

Home Collection

Lupin Diagnostics offers home collection for the 5-Hydroxyindoleacetic acid (5-HIAA) spot urine test across multiple cities. Your sample is collected by a trained phlebotomist and processed in a NABL-accredited laboratory. Digital reports are delivered directly to you, making it easy to share with your doctor.

Frequently Asked Questions

The 5-HIAA test measures the level of a serotonin breakdown product in urine. Doctors use it to detect carcinoid tumours in the digestive tract and to monitor patients already diagnosed with serotonin-secreting neuroendocrine tumours. It helps assess whether serotonin production in the body is elevated.

A 24-hour urine collection is generally more accurate because 5-HIAA levels can vary throughout the day. A spot (random) urine sample is tested when a full 24-hour collection is not practical. Because some tumours release serotonin intermittently, a single spot sample may occasionally miss raised levels.

Foods naturally rich in serotonin, such as bananas, pineapple, walnuts, and tomatoes, can raise 5-HIAA levels in urine temporarily. Eating these foods within 48 hours of collection may produce a falsely high result, which could lead to an incorrect interpretation. Avoiding them ensures your result reflects your body's actual serotonin production.

Yes, it is possible. Some carcinoid tumours do not produce serotonin, or they may release it only at intervals. A normal 5-HIAA test result does not completely rule out a tumour. Your doctor will consider this result alongside your symptoms and other investigations.

There are no risks involved. The test only requires you to collect a urine sample in a sterile container. No needles or invasive procedures are needed for this specific test.

For patients receiving treatment for carcinoid tumours, the 5-HIAA test helps assess how well treatment is working. Falling levels over time suggest a positive response, while stable or rising levels may indicate that treatment needs to be reviewed. Your doctor will advise on how frequently to repeat the test.

The report for the 5-HIAA spot urine test is typically ready within 5 days of the sample reaching the laboratory. You will receive your report digitally via email or WhatsApp. If you have not received your report within the expected time, contact your Lupin Diagnostics centre for an update.