Urinary excretion of 6-hydroxy-5-methoxyindole-2-carboxylic acid and 5-S-cysteinyldopa during PUVA treatment.

Hansson C, Wirestrand L E, Aronsson A, Rorsman H, Rosengren E

Photodermatol. 1985 Apr;2(2):52-7.

The urinary excretion of the eumelanin metabolite 6-hydroxy-5-methoxyindole-2-carboxylic acid and the pheomelanin metabolite 5-S-cysteinyldopa was followed during PUVA treatment for 6 weeks. They showed similar excretion patterns, with the highest values within 1-2 wk.