It's been what ... 10 years or more since weāas a fan baseāhave had to "deal" with a suspension like this. So, my memory may not be spot on ... BUT, as I recall ...
There are two different test for positive results on things like PED's. One, if positive, turns into a second test just to verify results.
It's been a LONG time since Todd Bates suspension so I very, very easily could be forgetting things.