Soleas G.J., Yan J., Goldberg D.M. (2001) Measurement of trans-resveratrol, (+)-catechin, and quercetin in rat and human blood and urine by gas chromatography with mass selective detection. Methods Enzymol 335:130-45 PubMed (11400362)

Plasma and Urine analysed without enzymatic deconjugation

Plasma Concentration (µg/L)
Number Dose Multiple Dose Duration Time (hours) Metabolite
0 0.5 1 2 4
1 25 mg Single Dose 0.35 0.94 0.82 0.99 0.65
(+)-Catechin
L)&chxp=1,50|3,50&chd=t:0.0,0.5,1.0,2.0,4.0|0.35,0.94,0.82,0.99,0
Excretion in Urine (µg/L)
Number Dose Multiple Dose Duration Time (hours) Metabolite
0 1 2 3 4 6
1 25 mg Single Dose 5.3 14.4 20.6 6 5.4 1.8
(+)-Catechin
L)&chxp=1,50|3,50&chd=t:0.0,1.0,2.0,3.0,4.0,6.0|5.3,14.4,20.6,6.0,5.4,1