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5- Hydroxy Indole Acetic Acid (5-HIAA)

Original price was: ₹ 3,850.00.Current price is: ₹ 3,199.00.



Serum, NA, Fasting or Non Fasting: As suggested by doctor

sample requiredSample Required:

For the 5-Hydroxy Indole Acetic Acid (5-HIAA) test, a 24-hour urine sample is required. This means that all urine produced over a 24-hour period is collected for the test.

test timeTest Time:

The collection of the 24-hour urine sample takes a full day. Once the sample is collected, it is sent to a laboratory for analysis. The results are typically available within a few days.

test normal rangeTest Normal Range:

The normal range for 5-HIAA levels in urine can vary based on factors such as age and diet. Generally, the normal range is up to 5 to 15 milligrams (mg) of 5-HIAA per 24 hours.

what is the testWhat is the Test?

The 5-Hydroxy Indole Acetic Acid (5-HIAA) test measures the level of 5-HIAA in urine. 5-HIAA is a breakdown product of serotonin, a neurotransmitter. The test is often used to diagnose and monitor certain types of tumors called carcinoid tumors, which can produce excess serotonin.

test procedureTest Procedure:

To perform the test, a healthcare provider will provide you with a container to collect all urine produced over a 24-hour period. This includes both day and night urine. After the collection period, the container is returned to the healthcare provider or laboratory for analysis.

when to take the testWhen to Take the Test:

The test is often ordered if a person is suspected of having a carcinoid tumor or if there are symptoms such as flushing, diarrhea, or other signs of excessive serotonin production.

who should take this testWho Should Take This Test:

Individuals with symptoms or signs suggestive of carcinoid tumors or excessive serotonin production may be advised to take this test.

precautions for exceptional casesPrecautions for Exceptional Cases (Pregnancy, etc.):

Pregnant individuals or those with specific medical conditions should inform their healthcare provider before collecting the urine sample, as certain factors can influence the results.



Q1: What are carcinoid tumors?

A: Carcinoid tumors are a type of neuroendocrine tumor that can develop in various organs, including the gastrointestinal tract and lungs. They can produce hormones like serotonin and cause symptoms like flushing and diarrhea.

Q2: Can diet affect the results of the test?

A: Yes, certain foods like bananas, avocados, and pineapples can contain serotonin precursors and may affect the test results. It’s important to follow any dietary restrictions provided by your healthcare provider.

Q3: Is fasting required for this test?

A: Fasting is usually not required for the 5-HIAA test. However, your healthcare provider may provide specific instructions.

Q4: What is the significance of elevated 5-HIAA levels?

A: Elevated 5-HIAA levels may indicate the presence of a carcinoid tumor. Further tests and evaluations may be needed to confirm the diagnosis.

Q5: Can medications affect the test results?

A: Some medications, such as certain antidepressants, can affect serotonin metabolism and 5-HIAA levels. Inform your healthcare provider about any medications you are taking.

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