This is a perfectly written, explained and valid response from the MLBPA on the subject of HGH testing. It touches on the reasons why the Players Association is concerned about the validity of the tests, as well as their desire to work with MLB on including any scientifically validated testing methods.

This week, a British rugby player was suspended as a result of a reported positive blood test for HGH. This development warrants investigation and scrutiny; we already have conferred with our experts on this matter, and with the Commissioner’s Office, and we immediately began gathering additional information. However, a report of a single uncontested positive does not scientifically validate a drug test. As press reports have suggested, there remains substantial debate in the testing community about the scientific validity of blood testing for HGH. And, as we understand it, even those who vouch for the scientific validity of this test acknowledge that it can detect use only 18-36 hours prior to collection.

Nicely done, MLBPA.