Tryptophan (abbreviated to Trp or W) is a natural amino acid that is a common precursor to a number of biologically important active molecule which includes serotonin and melatonin. It can be oxidized by the hormone-sensitive enzyme called tryptophan oxygenase to N-formyl kynurenine, this can then follow a series of steps which produces to amino-carboxymuconic semi-aldehyde.

ELISA kit information:

• Reactivity: Human
• Sample Type: Serum, Urine, Plasma
• Sensitivity: 1.2 µg/ml
• Target: Tryptophan, Trp