Distribution of caffeine levels in urine in different sports in relation to doping control.

  title={Distribution of caffeine levels in urine in different sports in relation to doping control.},
  author={W. Van Thuyne and K. Roels and F. Delbeke},
  journal={International journal of sports medicine},
  volume={26 9},
  • W. Van Thuyne, K. Roels, F. Delbeke
  • Published 2005
  • Medicine
  • International journal of sports medicine
  • Caffeine concentrations were measured in the urines of 11 361 athletes tested for doping control in the Ghent doping control laboratory during the period 1993 - 2002. Determination of these concentrations was done using an alkaline extraction with a mixture of dichloromethane and methanol (9:1; v/v) followed by high performance liquid chromatography and ultraviolet detection (HPLC-UV). The method was validated according to ISO 17 025 standards (International Organisation for Standardisation… CONTINUE READING
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