Seattle coach Pete Carroll said Friday morning that Harvin has not yet cleared his concussion tests. He said the only deadline for Harvin is the one determined by doctors who must clear Harvin for him to be able to play against San Francisco.
Harvin was injured late in the first half of Saturday's NFC divisional playoff win over New Orleans. 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.