The 5-HIAA (5-Hydroxyindoleacetic Acid) test is a 24-hour urine test used to measure the level of serotonin metabolites in the body. It is mainly used to detect carcinoid tumors, which can produce excess serotonin.
Why is this test done?
Flushing (redness of skin)
Chronic diarrhea
Wheezing or asthma-like symptoms
Suspected carcinoid syndrome
Procedure:
All urine is collected over 24 hours in a special container. Certain foods (like bananas, avocados, walnuts) and medications may need to be avoided before the test.
Why choose this test?
Helps detect rare hormone-secreting tumors
Supports early diagnosis and monitoring