5-Hydroxyindoleacetic Acid (HIAA), Urine HIAA
| Method(s) | Quantitative High Performance Liquid Chromatography-Tandem Mass Spectrometry | |||||||||||||||||||||||||||||||
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| Specimen Required | ||||||||||||||||||||||||||||||||
| Collect | 24-hour or random urine collection. Refrigerate during collection. | |||||||||||||||||||||||||||||||
| Transport | 4 mL aliquot from a well-mixed 24-hour or random collection at 2-8°C. (Min: 1 mL) |
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| Remarks | Patients should abstain, if possible, from medications, over-the-counter drugs, and herbal remedies for at least 72 hours prior to the test. 24-hour collections are generally recommended, but random collections may be used. Refrigeration is the most important aspect of specimen preservation. Record total volume and collection time interval on transport tube and test request form. | |||||||||||||||||||||||||||||||
| Stability | Ambient: Unacceptable; Refrigerated: 1 week; Frozen: 2 months |
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| Schedule | Daily | |||||||||||||||||||||||||||||||
| Billing Code | 5010095 | |||||||||||||||||||||||||||||||
| CPTCode | 83497 | |||||||||||||||||||||||||||||||
| Notes | Foods rich in serotonin (avocados, bananas, eggplant, pineapple, plums, tomatoes, and walnuts) and medications which may affect metabolism of serotonin must be avoided at least 72 hours before and during collection of urine for HIAA. | |||||||||||||||||||||||||||||||
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