Updated 12:30 p.m.: In a pair of tweets this morning, the brother of Nicklas Backstrom said the Capitals’ top center was tested for a concussion today after taking an elbow to the head in a 3-1 win over Calgary last night but that the results are inconclusive.

“Test done and the dr couldn't tell today but a small concussion/migraine. Have to wait for tmrw and a new test,” wrote Kristoffer Backstrom in the second tweet, which has since been deleted. (Very blurry screenshot can be found here.)

Backstrom was elbowed in the head by Calgary’s Rene Bourque midway through the second period Tuesday night. He returned to the ice for the remainder of the power play and for two more shifts, but then the Capitals took him out of the game for evaluation with 3:19 remaining.

Coach Dale Hunter said that Backstrom took part in an off-ice workout with teammates Wednesday but that the center will continue to be evaluated. The Capitals are formally listing Backstrom’s status as day-to-day and the team has not gone so far as to use the word concussion when discussing the center’s health.

“We’re evaluating and it’s one of those things where you evaluate it for a few days and see how he is,” Hunter said when asked if there was an indication of a concussion.

There hasn’t been a decision on whether Backstrom will travel with the team when it leaves for a two-game road trip to California Thursday afternoon, Hunter said.

While it’s not clear precisely what after effect the elbow may have had on Backstrom, it’s worth noting that the 24-year-old has a history of migraine headaches that in previous seasons forced him to leave games early. It’s possible the elbow could have caused some of those problems to resurface.

Bourque, a repeat offender, will have a disciplinary hearing this morning.

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