A syringe full of the banned doping substance EPO found in an Ashburton racing stable last week is unlikely to be the only one in circulation in the country, says Racing Integrity Unit chief Mike Godber.
The unit was handed an unused syringe of Neorecormon containing erythropoietin (EPO) by a trainer last Friday and an investigation is under way to find out where the substance came from.
"We'll be looking and trying to identify if there is more of it, but you wouldn't think it would be totally isolated.
"This inquiry could take time because we need to talk to all of those involved and it's likely some won't be that forthcoming," Mr Godber said.
The EPO find is the first of the banned substance in New Zealand. The drug is at the high end of the banned substance list. It boosts red blood cell production in the body enabling a horse to perform at a higher level.