- 5-hydroxyindoles (5-HIs) are a class of heterocycles of which 5-hydroxytryptamine (5-HT), 5-hydroxytryptophan (5-HTP), and 5-hydroxyindole acetic acid (5-HIAA) are members. [1] [2] [3] [4]
- Serotonin (5-HT) is metabolized into 5-HIAA in the liver. [5]
- There appears to be an inverse relationship between the plasma concentrations of 5-HT and other 5-HIs. [6]
- See also 5-hydroxyindole thiazoladine carboxylic acid (5-HITCA) and 5-hydroxyindole-O-methyltransferase (5-HIOMT)
