Description
Serum, NA, Fasting or Non Fasting: As suggested by doctor
Sample 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 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 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 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 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 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 Test:
Individuals with symptoms or signs suggestive of carcinoid tumors or excessive serotonin production may be advised to take this test.
Precautions 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.
