Wilson reached the semi-finals of the 60m at the European Indoors in March
Lincolnshire athlete Bernice Wilson has claimed a contaminated sample was the cause of her positive test for banned steroids testosterone and clenbuterol.
Wilson has been provisionally banned after failing a test at a meet in June.
"Evidence suggests testing procedures were not kept under the official rules of the World Anti-Doping Agency and the IAAF," said a statement on her behalf.
"The incomplete and insufficient way the testing procedure was carried out allowed the sample to be contaminated."
The statement also called for UK Anti-Doping, who administer drug testing in the UK, to withdraw the case against the European Indoor 60m semi-finalist and open an internal investigation to determine the cause of the contamination.
It added: "Bernice Wilson expresses her disappointment on how such a serious mistake can occur and her disbelief on the way that UK Athletics handled her case."
Wilson tested positive following a routine drug test at the Bedford International Games on 12 June.
If found guilty she could face a suspension of up to two years.
UK Anti-Doping say they will not comment on individual cases.