In the current International Standard of the Prohibited Substances and Methods (the Prohibited List), Glucocorticoids (GCs) are prohibited during the in-competition period when administered by oral, intravenous, intramuscular or rectal routes. The Glucocorticoids Threshold Working Group (GCTWG) has been established to evaluate the status of local injections in the WADA Prohibited List as well as to define GC-specific reporting concentrations. The GCTWG will gather and review the available literature (published and unpublished) on GC excretion studies to elaborate a novel approach that differentiates doping from acceptable medical use in sport.
Working Group Terms of Reference.
WADA Contact: Hai-Yen Huynh, Executive Assistant, Science and Medicine
Below is the list of Working Group members:
Mark STUART (Chair)
United Kingdom 
Frank BUTTGEREIT 
Germany
Catherine COLLOMP 
France
Peter DALEY-YATES 
United Kingdom
Irene MAZZONI 
Argentina/Canada, WADA
Olivier RABIN 
France, WADA
Martial SAUGY 
Switzerland
Rosa VENTURA ALEMANY
Spain