These include samples, from all three codes, that have been previously stored by order of the Stewards in addition to other routine race day samples.
The analysis of these samples involves additional targeted screening for new and emerging threats to integrity.
The samples are currently in the process of being conveyed to the Hong Kong laboratory with the results of analysis to be advised once testing has been completed.
Additional sampling of runners will be taking place during the upcoming carnivals in addition to other increased integrity strategies.
RWWA Stewards advise that they will continue to store samples which in due course will be subjected to similar screening.