Tom Pelissero

USA TODAY Sports

RENTON, Wash. — If Percy Harvin plays in the NFC Championship Game, he'll do it with no more than one day of practice.

The Seattle Seahawks' dynamic receiver and return ace continues to go through concussion protocols and won't practice Thursday, coach Pete Carroll said.

Harvin left last weekend's divisional playoff win over the New Orleans Saints with a concussion in the second quarter.

He's running out of time to be cleared by Seahawks doctors and an independent neurologist in time to play Sunday against the San Francisco 49ers.

Harvin hit his head hard on the turf after jumping for a pass in the end zone. It was the second big hit Harvin took in the game.

Before being injured, Harvin had three receptions and one carry in just his second game of the season.

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Contributing: Wire reports