See reference lab website for details.
https://www.labcorp.com/tests/004069/5-hydroxyindoleacetic-acid-hiaa-quantitative-24-hour-urine
Aliases
4069,5-HIAA, Quantitative, 24-Hour Urine,Serotonin Metabolite, 24-Hour Urine
Specimen Type
See reference lab website for details.
https://www.labcorp.com/tests/004069/5-hydroxyindoleacetic-acid-hiaa-quantitative-24-hour-urine