5-HIAA
Alternative names:
5-hydroxyindole acetic acid; HIAA; serotonin metabolite
Normal values:
The normal range is 3 to 15 mg/24 hr
Note: mg/24 hr = milligrams per 24-hours
What abnormal results mean:
5-HIAA levels are usually measured to detect and follow the clinical course of patients with carcinoid tumors.
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