5-Hydroxyindoleacetic Acid (HIAA) Urine (5 HIAA)
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| Synonyms:
| 5-HIAA; Serotonin Metabolite |
| Specimen: | Urine; 24 hour urine collected in a 24 hour collection container.
Instruct patient on proper 24 hour urine collection procedure. Patient should avoid bananas, avocados, plums, eggplant, tomatoes, plantain, pineapples, walnuts, and interfering drugs for a 72-hour period prior to and during the collection.
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| Volume: | 30 mL aliquot |
| Minimum Volume: | 1 mL aliquot |
| Collection: | If additional tests are ordered, 30 mL 6N HCI or 1g/L boric acid may be added without harm to 5-HIAA.
Submit a 30 mL urine aliquot for testing with documentation of 24 hour volume on request.
Refrigerate at 2-8°C. |
| Rejection Criteria: | pH less than 2; improper labeling. |
| Reference Range: | 0-14.9 mg/24 hours |
| Methodology: | High-pressure liquid chromatography (HPLC) with electrochemical (EC) |
| Test Use: | Diagnosis of carcinoid tumors and syndrome |
| Additional Information: | Patient should avoid bananas, avocados, plums, walnuts, eggplant, tomato, plantain, pineapple, and interfering drugs for 72 hours before and during collection |
| Testing Includes: | Specimen sent to LabCorp. LabCorp test # 004069. |
| Testing Facility: | LabCorp |