All for show.
The way to do it is to take a baseball, after a pitch from Scherzer (or whoever), and put it into a plastic lab bag and take it to a lab, as they said they would do opening day but apparently have not.
AND they should dock the pitchers pay for the 10 day suspension.
I am in favor of cracking down on this it is amazing not ONE pitcher has been caught this year, even though it is widespread.