Urine Plasma  
Polyphenol metabolite Composition of the [polyphenol] source Doses
administered
Dose
duration
Total no. subjects Mean urinary excretion (%) Kinetic data Tmax (hours) Mean Cmax (µmol/L) Half life (hours) AUC (µmol/L·h) Kinetic data Reference
human studies
Homovanillic acid Food administered
50 mL Single dose 6 2837 µg after 24 hours CARUSO 2001
Homovanillyl alcohol Food administered
50 mL Single dose 6 1137 µg after 24 hours CARUSO 2001
Hydroxytyrosol Food administered
50 mL Single dose 6 1112 µg after 24 hours CARUSO 2001