It's pretty bad to get beaten up and find out later you opponent cheated. Vera vs Thiago. A few questions
Do fighters get randomly tested?
Is it before each fight? Or sometimes?
Why urine tests not blood?
People say it is different from Olympics, how so?
What would be the best option? 
You piss in a cup.
A "doctor" has to hold your penis for you while you go, he or she drinks it, swishes around, and if they don't taste anything that shouldn't be there, you are cleared.
Wow
Carne de cavalo é o melhor - You piss in a cup.
A "doctor" has to hold your penis for you while you go, he or she drinks it, swishes around, and if they don't taste anything that shouldn't be there, you are cleared.
It doesn't work.
It IS a work.
See the UFC not pulling Overeem and just wait until Overeem-JDS gets tweeted by Dana as "on".
Wow