How do they test for drugs at the olympics?
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How do they test for most drugs at the Olympics?
urine testing
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How do they test for blood doping at the Olympics?
Blood test
Doping at the Olympic Games
https://en.wikipedia.org/wiki/Doping%20at%20the%20Olympic%20Games
Blood doping is the practice of boosting the number of red blood cells in the bloodstream in order to enhance athletic performance.
Blood doping
They use urine testing for most drugs at the Olympics. Blood test results, however, show use of blood doping at the Olympics, a blood transfusion given to athletes to increase the number of red blood cells to enhance aerobic performance.