Red Sox shortstop Stephen Drew, who hasn't played since March 7 because of a concussion, will travel to Pittsburgh tonight to be examined by a specialist.

Drew will see Dr. Micheal Collins at the University of Pittsburgh Medical Center on Wednesday and part of Thursday before returning to camp. Collins is the director of the Sports Concussion Program at UPMC.

"We don't have any reason to think there's more there. We're trying to get a better understanding of what is there," Sox manager John Farrell said. "Just the fact that he's still experiencing the same type of symptoms. We just to try to get out arms around it as best we can."

Farrell said Drew will undergo a battery of tests. Drew told reporters last week that he had never had a concussion before. He was injured when he was hit in the helmet by a pitch. At the time, Drew stayed in the game for another two innings.

"His care is first and foremost," Farrell said. "The fact is we're still in spring training. We know the days are ticking by. But whatever measure we can take with his care being first and foremost, we're going to do that."

There seems to be no chance Drew will be on the roster for Opening Day on April 1.

"That's window's closing by the day," Farrell said. "When you talk about an ordinary or somewhat normal amount of at-bats in spring training, those opportunities are starting to be removed."

Farrell has indicated that Jose Iglesias would start at shortstop if Drew lands on the disabled list.

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