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5 - Hydroxyindoleacetic Acid (HIAA), Urine

Mnemonic:    [U 5HIAA]
Name:    5 - Hydroxyindoleacetic Acid (HIAA), Urine
Specimen:    4 mL aliquot from a 24 hour or random urine collection. Refrigerate sample during collection.

Refer to the ARUP web site for a full list of foods to avoid.
Minimum Spec:    3 mL
Transport Temp:    Refrigerated
Spec Stability:    Stable 7 days refrigerated.
Ref Lab/Code:    ARUP 0080420
  Method:    HPLC/Tandem Mass Spectrometry
Note:    Patients should abstain, if possible, from medications, over-the-counter drugs and herbal remedies for at least 72 hours prior to the test.

Foods rich in serotonin (avocados, bananas, eggplant, pineapple, plums, tomatoes, walnuts) and medications that may affect metabolism of serotonin must be avoided at least 72 hours before and during sample collection for this test.

Refer to the ARUP web site for a full list of foods to avoid.
Processing Info:    Record total volume and collection time interval on the transport tube. Verify this information in LIS.

Collection instructions for a 24 hour urine sample