Pr. Ayotte obtained her M.Sc. (1978) and Ph.D. (1983) degrees in Organic Chemistry (Photochemistry) from the University de Montreal. Following two years of postdoctoral studies in mass spectrometry at the “INRS-Santa”, she joined as a research associate its Doping Control Laboratory. Her main research interests were then the characterization of the urinary metabolites of anabolic steroids and this lead to the development of a comprehensive gas chromatographic/mass spectrometric method for the detection and identification of anabolic agents. She is responsible for the Doping Control Laboratory since 1991 and was research associate professor since 1992. She is a member of the IAAF doping Commission since 1995, of the IOC Working Group on Harmonization of Laboratory protocols (1996-…) and was elected representative of the Heads of IOC Accredited Laboratories in 1995-1996. She is often requested to act as an expert for sport administrative, civil or criminal court hearings and arbitration in Canada, USA and Europe.