5-Hydroxyindoleacetic Acid Excretion Rate

**Semantic type:** Laboratory Procedure

**Definition:** The determination of the amount of 5-hydroxyindoleacetic acid being excreted in a biological specimen over a defined period of time.

**Synonyms:** - 5-HIAA Excretion Rate - 5-HydroxyindoleaceticAcid Excretion Rate - 5-HydroxyindoleaceticAcid Excretion Rate - IA5OHEXR