A 90-year-old cyclist has been stripped of a world record after failing a drugs test at the US Masters Track National Championships.

Carl Grove set the record in winning the 90-94 age group sprint title last July.

But he was stripped of the title after testing positive for the metabolite epitrenbolone, the US Anti-Doping Agency (USADA) said.

USADA said the positive test was probably caused by contaminated meat eaten the evening before the race.

The agency said Grove, who was also found to be using a supplement contaminated with clomiphene, had accepted a public warning for violating anti-doping laws.

Epitrenbolone is a metabolite of the substance trenbolon, which is prohibited by USADA.

–ABC