Do they catch cheats from the same country in groups rather then just one most time?

Question

Do they catch cheats from the same country in groups rather then just one most time?

Answer 1

If they only aim certain country, that would make them racist.  

Answer 2

it is a good question and i think the answer is they catch them all at the same time because they are all using the same drug and being tested at the same time because they are on the same team or participate in the same sport

Answer 3

I suggest Test all the medalists right after they finish competitions for qualification.