Serotonin 5-Hydroxy Tryptamine Test
About Serotonin 5-Hydroxy Tryptamine Test
| Field | Value |
|---|---|
| Also Known As | 5-HT Test, 5-Hydroxytryptamine Test, Serotonin Serum Test, Serotonin Blood Test |
| Sample Type | Serum (venous blood) |
| Fasting Required | Not required |
| Report Time | 7 days |
| Recommended For | Adults of any gender with symptoms suggestive of carcinoid syndrome or neuroendocrine tumours |
| Price | Starting at ₹4,220 |
What is a Serotonin 5-Hydroxy Tryptamine Test?
The serotonin 5-hydroxy tryptamine test measures the amount of serotonin in the blood. Serotonin is a chemical that carries signals between nerve cells, influences mood, and plays a role in digestion and sleep. A doctor may order this test when a patient shows symptoms that suggest a serotonin-producing tumour or a related condition. This test is also known as the 5-HT test, 5-hydroxytryptamine test, serotonin serum test, or serotonin blood test. The sample used is serum, collected from a vein in the arm.
What Does a Serotonin 5-Hydroxy Tryptamine Test Measure?
This test analyses a single parameter in the serum sample. The table below explains what is being assessed and why it matters:
| Component | What It Is | Why It Matters |
|---|---|---|
| Serotonin (5-HT) | A chemical messenger produced mainly in the gut and the brain | Helps regulate mood, sleep, digestion, and blood vessel function |
Why is a Serotonin 5-Hydroxy Tryptamine Test Done?
Doctors order this test to investigate a range of symptoms and conditions linked to abnormal serotonin levels.
Common Symptoms That May Require This Test
Several physical symptoms can prompt a doctor to request a serotonin 5-hydroxy tryptamine test. These include:
- Sudden flushing of the face, neck, or upper body
- Persistent or unexplained diarrhoea
- Wheezing or difficulty breathing
- Abdominal pain or cramping
- Rapid heartbeat
- Fatigue without a clear cause
Conditions This Test Can Help Detect
This test is used to investigate several specific medical conditions. These include:
- Carcinoid tumours, which are slow-growing neuroendocrine tumours arising from hormone-producing cells in the gut
- Carcinoid syndrome, a condition caused by metastatic neuroendocrine tumours that secrete large amounts of serotonin, leading to flushing, diarrhoea, and heart complications
- Foregut, midgut, and hindgut carcinoid subtypes, classified by their location in the digestive tract
- Conditions associated with lower serotonin activity, such as depression, anxiety disorders, and obsessive-compulsive disorder
How to Prepare and What to Expect
Preparing correctly for the serotonin 5-hydroxy tryptamine test procedure helps ensure your results are accurate. Here is what you need to know.
Do You Need to Fast?
Fasting is not required for this test. You can eat and drink normally before your sample is collected. However, if your doctor has ordered additional tests alongside this test, fasting may be required for those specific tests. Always follow the instructions given by your doctor or the diagnostic centre at the time of booking.
Practical Tips Before Your Test
Following these steps before your appointment helps ensure reliable results:
- Bring a detailed clinical history including your symptoms, previous test results, and any relevant medical records, as this is required for the test
- Avoid serotonin-rich foods such as avocados, bananas, pineapples, plums, walnuts, tomatoes, and aubergines for three days before sample collection
- Avoid tobacco, tea, and coffee for three days before the sample collection
- Tell your doctor about all medications you take, particularly lithium, monoamine oxidase inhibitors (MAOIs), methyldopa, morphine, reserpine, or SSRIs (antidepressants such as fluoxetine), as these can affect serotonin levels
- Note that some medications, particularly fluoxetine, can take months to clear from the body, so discuss timing with your doctor well in advance
- Wear a short-sleeved or loose-sleeved top for easy access to your arm
Step-by-Step Procedure
The serotonin 5-hydroxy tryptamine test procedure involves a standard blood draw. Here is what to expect:
- A trained phlebotomist (a specialist who collects blood samples) will ask you to sit comfortably and extend your arm.
- The collection site on your arm is cleaned with an antiseptic solution.
- A small needle is used to draw blood from a vein. You may feel a brief sting.
- The blood sample is collected into a gel tube and labelled carefully. Correct tube type and rapid handling are essential for accurate results.
- Gentle pressure is applied to the puncture site, and a small bandage is placed.
- The sample is stored at the correct refrigerated temperature (2 to 8°C) and dispatched to the laboratory for analysis using the EIA (enzyme immunoassay) method.
Factors That Can Affect Accuracy
Certain factors can interfere with the accuracy of your result. These include:
- SSRIs such as fluoxetine, which deplete platelet serotonin and can lead to falsely low results
- Medications such as lithium, MAOIs, methyldopa, morphine, and reserpine, which can raise serotonin levels
- Platelet activation during or after blood collection, which can cause falsely elevated readings
- Liver or kidney dysfunction, intestinal disorders, and platelet abnormalities may affect results
- Dehydration or significant physical exertion before the test can also interfere the test results
Understanding Your Serotonin 5-Hydroxy Tryptamine Test Results
Your doctor will review your results alongside your symptoms, medical history, and other tests. The table below provides general reference ranges for serotonin levels:
| Parameter | Normal Range | Unit |
|---|---|---|
| Serotonin (Serum) | 0 to 230 | ng/mL |
Disclaimer: 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 and medication factors can alter how results are interpreted:
- Medications such as lithium, MAOIs, methyldopa, morphine, and reserpine tend to raise serotonin levels, while SSRIs tend to lower them.
- Liver or kidney dysfunction, intestinal conditions, and platelet abnormalities may influence serotonin levels or complicate their interpretation.
How to Maintain Healthy Levels
These general wellness tips may help support balanced serotonin function:
- Eat a balanced diet that includes tryptophan-rich foods such as eggs, cheese, nuts, and fish, as tryptophan is the building block for serotonin.
- Stay physically active, as regular exercise is associated with healthy neurotransmitter balance.
- Practise stress management techniques such as mindful breathing or yoga, since prolonged stress can disrupt neurotransmitter function.
Lupin Diagnostics Serotonin 5-Hydroxy Tryptamine Test Price and Home Collection
The serotonin 5-hydroxy tryptamine test cost at Lupin Diagnostics starts at ₹4,220, and home collection is available across cities. The table below shows approximate prices:
| City | Approximate Price (₹) |
|---|---|
| BHOPAL | 4220 |
| CHENNAI | 4220 |
| HYDERABAD | 4220 |
| KOLKATA | 4220 |
| NAVI MUMBAI | 4220 |
| PUNE | 4220 |
Disclaimer: Prices are indicative and may vary by location. Please confirm the current price at the time of booking.
How to Book
The serotonin 5-hydroxy tryptamine test online booking process at Lupin Diagnostics is quick and straightforward:
- 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 7 days.
Home Collection
The serotonin 5-hydroxy tryptamine test home collection is available across cities through Lupin Diagnostics. A certified phlebotomist visits your home at your chosen time, ensuring proper sample handling. All samples are processed in NABL-accredited laboratories, and your digital report is delivered securely via email or WhatsApp.
Frequently Asked Questions
This test measures serotonin levels in the blood to help diagnose and monitor serotonin-secreting tumours, particularly carcinoid tumours. It is also used to investigate symptoms associated with carcinoid syndrome, such as flushing, diarrhoea, and wheezing. Your doctor will interpret the result alongside your symptoms and clinical history.
The serotonin blood test is not a standard diagnostic tool for depression or anxiety. Blood serotonin levels do not reliably reflect serotonin levels in the brain, where it primarily functions as a neurotransmitter. Mental health conditions are diagnosed through clinical assessment rather than a single blood test.
Yes. Foods naturally high in serotonin, such as avocados, bananas, pineapples, plums, walnuts, tomatoes, and aubergines, should be avoided for three days before the test. Tobacco, tea, and coffee should also be avoided during this period. Always confirm dietary instructions with your laboratory before your appointment.
Several medicines can alter serotonin levels in the blood. These include SSRIs (such as fluoxetine), lithium, monoamine oxidase inhibitors, methyldopa, morphine, and reserpine. Always give your doctor a full list of your current medications before the test, as some medicines may need to be paused or their timing adjusted.
At Lupin Diagnostics, the report for the serotonin 5-hydroxy tryptamine test is delivered within 7 days. The test results will be delivered directly via email or WhatsApp.
Yes, serotonin 5-hydroxy tryptamine test home collection is available through Lupin Diagnostics. A certified phlebotomist visits your location, collects the sample under proper conditions, and ensures it is stored and transported correctly for accurate results.
A phlebotomist draws a small blood sample from a vein in your arm. The sample is collected in a gel tube and kept refrigerated. The serotonin 5-hydroxy tryptamine test procedure is quick, takes only a few minutes, and causes minimal discomfort.
Serotonin 5-Hydroxy Tryptamine Test
