It usually takes a while. Most riders it will take some months. I'm
guess these will be quick. But then again we don't know the "true"
reasons for the test.
I would guess we probably won't know until end of or even after the
Tour.
But as I say... there are a lot of variables here.
Side Note: the amount of blood they remover for testing is very small,
within 24 hours his blood will be replaced, however, the amounts taken
are SO small, it doesn't really make any difference.