Well, not quite.
The league has been pushing for some time. The Union has been blocking them.
This headline stems from a first baby step. Its not a test, but each player will have to do a blood sample, those will all be taken and checked, to build up a catalog of whats out there.
This is because the Union contends that maybe due to all the muscle/workouts, their normal background level of HGH will be higher in players who don't take it somehow, compared with all the background data from other sports.
The union just keeps trying to block anyway they can.
Now commence all the GL4x4 NFL bashing because they make more money than us.