Dear All,
I am currently examining the subject of caffeine testing in
competitive athletes. To date I have been unable to ascertain how the
'cut-off' level of 12mcg/ml was determined and why it changed from 15mcg/ml
in 1988. Does anyone know where I can find out his information? I would
greatly appreciate any help. Please reply direct to me if you do have any
information.
Thank-you for your time,

Sue Mcleod