Specimen type 24 hour urine collection (random/spot urine sample is not suitable) Pre-analytical handling requirements Food high in serotonin content (avocados, bananas, tomatoes, plums, walnuts, pineapples and eggplant) should be avoided for 3 to 4 days prior to and during the urine collection, otherwise falsely elevated 5-HIAA results may be obtained. Reference ranges and test […]
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