Donald Fehr, the leader of the MLB Players' union, would consider approving a blood test for human growth hormone if it was considered reliable, according to the Associated Press. "If and when a blood test is available and it can be signed and validated by people other than those that are trying to sell it to you, then we'd have to take a hard look at it," Fehr said Thursday. "We'd have to see what it is and try to make a judgment as to whether it is fair and appropriate."