No New Zealand athletes are among the six to have returned positive drug tests in the wake of re-testing samples taken at last year's Beijing Olympics.
Of the almost 5,000 samples taken at the Beijing Olympic Games, almost one thousand have been re-analysed for the new blood-boosting drug CERA.
Seven positive tests involving six athletes have been returned but the secretary general of the New Zealand Olympic Committee Barry Maister says none are from New Zealand atheltes.
The latest round of testing began in January and focused on endurance events in cycling, rowing, swimming and athletics.
Nine athletes tested positive during the Beijing Olympics after extensive pre-Games testing nabbed about 40 for drugs while six horses in the equestrian events were also found to have been given banned substances.