Mulder T.P., van Platerink C.J., Wijnand Schuyl P.J., van Amelsvoort J.M. (2001) Analysis of theaflavins in biological fluids using liquid chromatography-electrospray mass spectrometry. J Chromatogr B Biomed Sci Appl 760:271-9 PubMed (11530986)

Compound Mean content
Theaflavin 123.9 mg/mg dry weight
Theaflavin 3-O-gallate 222.6 mg/mg dry weight
Theaflavin 3'-O-gallate 116.9 mg/mg dry weight
Theaflavin 3,3'-O-digallate 219.8 mg/mg dry weight