- 91005
5-Hydroxyindoleacetic Acid (HIAA), Urine
Specimen:
Collect
- Timed Urine in Timed Urine Container
Also Acceptable:
- Random Urine in Sterile Specimen Container
Submit
- 4 mL (Min:1 mL) Aliquot(s) Timed Urine in Sterile Specimen Container. Submit Refrigerated. Submit in a Standard Transport Tube.
Also Acceptable:
- 4 mL (Min:1 mL) Random Urine in Sterile Specimen Container. Submit Refrigerated. Submit in a Standard Transport Tube.
Special Handling
- 24 HR Urine Collection Preferred
- Keep Specimen Refrigerated During Collection
- State Collection Time
- State Volume
- Patients should consult their physician prior to stopping any medications but it is prefered to be off all medications, over-the-counter drugs, and herbal remedies for at least 72 hours prior to the test.
Foods and medications associated with altered urinary HIAA results:
Decreased HIAA: Aspirin, chlorpromazine (Thorazine), corticotropin, dihydroxyphenylacetic acid, ethanol, gentisic acid, homogentisic acid, hydrazine derivatives, imipramine (Tofranil®), isocarboxazid (Marplan), keto acids, levodopa, MAO inhibitors, methenamine, methyldopa (Aldomet®), perchlorperazine, phenothiazines (Compazine®), promazine, promethazine (Mepergan®).
Increased HIAA: Acetaminophen, acetanilide, caffeine, coumaric acid, diazepam (Valium®), ephedrine, fluorouracil, glycerol guaiacolate (Guaifenesin), melphalan (Alkeran®), mephenesin, methamphetamine (Desoxyn), methocarbamol (Robaxin®), naproxen, nicotine, phenacetin, phenmetrazine, phenobarbital, phentolamine, rauwolfia, reserpine.
Foods: Avocados, bananas, eggplant, pineapple, plums, tomatoes, walnuts.
Foods rich in serotonin and medications which may affect metabolism of serotonin must be avoided at least 72 hours before and during collection of urine for HIAA.
Stability
Ambient: Unacceptable; Refrigerated: 1 Week(s); Frozen: 2 Month(s); Incubated: Unacceptable
Methodology
- Quantitative High Performance Liquid Chromatography-Tandem Mass Spectrometry
Performed
Sun-Sat
Reported
2-6 Day(s)
CPT Codes
- 83497
Interpretive Data
Please see report for interpretive data.
Components
- 93388 - URINE VOLUME
- 93518 - HOURS COLLECTED
- 93008 - CREAT, UR
- 93009 - CREATININE
- 93200 - INTERPRETATION
- 93210 - 5-HIAA,URINE
- 93211 - 5-HIAA, URINE
- 93598 - 5-HIAA, URINE
Last Updated: October 10, 2024 @ 9:13 am
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