UCI Bans Repeated Carbon Monoxide Inhalation, CO Hb Mass Testing OK Once or Twice
The UCI's latest ban prevents repeated CO2 inhalation, which may or may not have been happening in the pro peloton to increase performance.
UCI bans riders from inhaling carbon monoxide on health and safety grounds
Cyclists and teams can no longer use carbon monoxide gas outside of a medical facility, the sport's governing body International Cycling Union (UCI) said.