Metabolomics and doping analysis: promises and pitfalls.

This brief commentary presents an overview of the potential utility of metabolomics-based approaches in doping analysis, with particular emphasis on areas where the current analytical procedures would most benefit from an improvement of their efficacy. Metabolomics, first defined by O Fiehn at the beginning of this millennium as “a comprehensive and quantitative analysis of all metabolites” of a given biological system [1], has not been considered in the field of doping analysis until very recently.With the exception of the monitoring of the urinary steroid profile, which is de facto a form of ‘targeted steroidomics’, metabolomics-based procedures are not yet part of the routine analytical activity of the antidoping laboratories accredited by the World Anti-Doping Agency (WADA). We aim to supply a critical view on the potential utility of metabolomics-based approaches in doping analysis, outlining how they could complement the analytical procedures already in place at the WADA accredited laboratories, and what is still needed to ensure their actual application in doping analysis