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Lab Manual for Moffitt-Long and Mount Zion

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5-Hydroxyindoleacetic acid, 24 hour urine

Item Value
Approval req'd? No
Available Stat? No
Test code 5HQT
Test group HIAA
Performed by Quest
Sendout? Yes
Method HPLC
Patient Preparation Patient should avoid food high in indoles: avocados, bananas, berries, eggplant, nuts, passion fruit, pineapple and its juice, plantains, plums, and tomatoes. Patient should also avoid alcohol, tobacco, tea and coffee three days prior to and during specimen collection.
Collection Instructions 72 hours prior to and throughout the entire period of specimen collection avoid avocados, bananas, berries, eggplant, nuts, passion fruit, pineapple and its juice, plantains, plums, and tomatoes, as well as alcohol, coffee, tea and tobacco. Obtain container with preservative at Specimen Receiving. Refrigerate sample while collecting.
Container type 24 hour urine collection container

Click here for Urine Preservative Requirements
Amount to Collect Entire 24 urine output
Sample type 24 hour urine collection
Preferred volume 10 mL urine
Min. Volume 5 mL urine
Processing notes Refrigerate aliquot. Order Quest # 9936N
Units mg/24 h or mg/g creat.
Normal range
24 hour urine
2-10 years < 8.0 mg/d
> 10 years < 6.0 mg/d
Synonyms HIAA
Turn around times Test run Monday-Friday. Turnaround: 2-5 days.
Additional information To convert mg to µmol (SI units) multiply by 5.2.
LOINC code 31203-3
Last Updated 3/24/2013 7:49:16 PM
Entry Number 500

If you have additional questions regarding this test, please call: 415-353-1667

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