UR 5HIAA (24 hr)
CATEGORY: LAB      MNEMONIC: 5HIAA
LAB: Ref
DEPT: LC
TAT: 5 days
TEST#: 4069
CPT: 83497

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SYNONYMS:
     Serotonin, Urine   /   Hydroxyindoleacetic Acid

PREFERRED SPECIMEN:
     4 mL Urine - No preservative, 24 hr collection

MINIMUM SPECIMEN:
     1 mL Urine - No preservative, 24 hr collection

SPECIAL INSTRUCTIONS:
     Transport ambient.
     Keep cold during collection and 1 g/L boric acid may be added as a preservative for other tests without harm to 5HIAA.
     Dietary & Drug Restrictions - Avoid bananas, avocados, plums, eggplant, imipramine, isoniazed, MAO inhibitors, methyldopa, nicotine, phenmetrazline, pineapples, reserpine, walnuts, ethanol, heparin, levodopa, corticotropin and tomatoes for a 72-hour period or more prior to and during the collection.Note: Many MAO inhibitors require up to 7 days to clear the system.

CAUSE FOR REJECTION:
    pH < 2