After the British MX GP, 30 May, the two front running Kiwis, Josh Coppins and Ben Townley were checked for illegal substances and none were found.
Also controlled were: Stefan Everts (BEL, MX1), Joel Smets (BEL, MX1, Mickael Maschio (FRA, MX2) and Stephen Sword (GBR, MX2).
Those samples also showed the absence of any banned substances.