title: New assay for tryptophan and its 5-hydroxyindole metabolites in blood.
mesh_terms: D006916:5-Hydroxytryptophan / Q000097:blood*; D002852:Chromatography, Ion Exchange; D005069:Evaluation Studies as Topic; D006801:Humans; D006897:Hydroxyindoleacetic Acid / Q000097:blood*; D008722:Methods; D008832:Microchemistry; D012701:Serotonin / Q000097:blood*; D013050:Spectrometry, Fluorescence; D013997:Time Factors; D014364:Tryptophan / Q000097:blood* / Q000378:metabolism
chemical_list: D012701:Serotonin; D006897:Hydroxyindoleacetic Acid; D014364:Tryptophan; D006916:5-Hydroxytryptophan