Biochemistry Tryptophan metabolism detail dcb1b2f3 5-hydroxyindoleacetate is a catabolic product of A Histidine B Tyrosine C Phenylalanine D Tryptophan High-Yield Explanation 5-hydroxyindoleacetate (5-HIAA) is a catabolic product of serotonin, which is derived from tryptophan.