#ExistRefRangeSet>
Reference Interval:
#ExistRefRangeTable> | Test Number
| Components
| Reference Interval
| | | 5-HIAA, Urine | 0.0-15.0 mg/d
| | | 5-HIAA, Urine
| The HIAA-to-creatinine ratio will be reported whenever the urine collection is random or other than 24 hours, or the urine volume is less than 400 mL/24 hours.
0-14 mg/g crt
| | | Creatinine, Urine - per 24h
| | Age
| Male
| Female
| | 3-8 years
| 140-700 mg/d
| 140-700 mg/d
| | 9-12 years
| 300-1300 mg/d
| 300-1300 mg/d
| | 13-17 years
| 500-2300 mg/d
| 400-1600 mg/d
| | 18-50 years
| 1000-2500 mg/d
| 700-1600 mg/d
| | 51-80 years
| 800-2100 mg/d
| 500-1400 mg/d
| | 81 years and older
| 600-2000 mg/d
| 400-1300 mg/d
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*ExistRefRangeTable>
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*ExistRefRangeSet>
#ExistInterpDataSet>
| Interpretive Data: |
#ExistInterpData>5-Hydroxyindoleacetic acid (5-HIAA) results are expressed as a ratio to creatinine excretion (mg/g crt). HIAA mass per day (mg/d) is not reported if the urine collection is random, other than 24 hours, or for a urine volume less than 400 mL/d. No reference interval is available for results reported in units of mg/L.
*ExistInterpData>
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*ExistInterpDataSet>
#ExistNote>
| Note: |
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.
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*ExistNote>
#ExistCPT>
| CPT Code(s): |
83497
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*ExistCPT>
#ExistCrossReferences>
Cross References: |
5-HIAA (5-Hydroxyindoleacetic Acid (HIAA), Urine), Serotonin Metabolite (5-Hydroxyindoleacetic Acid (HIAA), Urine) |
*ExistCrossReferences>
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