NASCAR rated with 5th best Drug Testing in sports
NASCAR: Has nine racing series with close to 2,000 drivers. The misuse or abuse of any drug or alcohol is a violation. Even prescription drugs and over-the-counter drugs that may cause a driver "to have a competitive advantage or diminished or impaired ability to perform" on the day of the event are banned. Competitors are subject to out-of-season testing, preseason testing, random testing and testing for cause. Positive test result means an indefinite suspension. Competitors are offered a treatment program to undergo and afterward may seek reinstatement. No drivers' union to contend with and an obligation to protect spectators allow for strict policy.
The four sports ahead of NASCAR: International Boxing Federation / U.S. Boxing Association; International Olympic Committee; International Tennis Federation; International Association of Athletics Federations (track & field). Wall Street Journal