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@splendrous

Thanks gesmone1 and Teresa, I am surprised that Mayo Clinic, MD Anderson, Carcinoid Foundation and many others continue to have information on diet restrictions on their websites for this test, if this is no longer the practice. I was also not given any dietary or medicines to avoid for the test. Teresa, you might want to mention to whomever is in charge of the website that they might want to review the information that is currently published on the web.

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Replies to "Thanks gesmone1 and Teresa, I am surprised that Mayo Clinic, MD Anderson, Carcinoid Foundation and many..."

My husband has done this test twice now. He was provided with a list of food to avoid for 72 hours prior. We did our own research and found that multiple websites have recommendations to avoid food containing high levels of serotonin or those that may interfere with the assay. This includes caffeine, allergy and pain medications as well. Here are some websites we have found:
https://www.carcinoid.org/for-patients/diagnosis/diagnosis-and-follow-up-tests/preparing-for-the-24-hour-urine-5hiaa-test/
https://www.mskcc.org/cancer-care/patient-education/24-hour-urine-collection-5-hiaa-test
https://www.ucsfhealth.org/medical-tests/5-hiaa-urine-test
https://netrf.org/for-patients/diagnostic-tests/5-hiaa-tests/