特異性：Using a conjugate L-Tryptophan-PC, antibody specificity was performed with an ELISA test by competition experiments with the following compounds:Compounds Cross-reactivity ratio (a)L-Tryptophan-PC 1 5-Hydroxy-L.Tryptophan-PC 1/100 5-Methoxy-L.Tryptophan-PC 1/250 L-Tryptophan (free) 1/3,000 Tryptamine-PC 1/11,000 5-Methoxytryptamine-PC 1/＞50,000 5-Hydroxytryptamine-PC 1/＞50,000
純度：Antiserum preabsorbed on protein carriers, and purified
