Harvin was a full participant in practice for the first time this season Thursday. Harvin had been limited Wednesday and was not listed on any previous injury reports since he wasn't added to the active roster until Monday.
Harvin has yet to make his debut for the Seahawks following hip surgery on Aug. 1 to repair an injured labrum. Harvin's debut could come this Sunday against his former team, the Minnesota Vikings.
Seattle had 13 players listed as full participants on Thursday's injury report including cornerback Richard Sherman (hip) and defensive end Chris Clemons (non-injury reason), who both sat out practice on Wednesday.
Harvin was acquired by the Seahawks in an offseason trade with the Vikings. Seattle gave up a trio of picks, most notably a first-rounder in April's draft.
But he suffered a torn labrum in his hip and underwent the August surgery. The Seahawks have thrived without him, sitting atop the NFC with an 9-1 record and holding a 2.5-game lead over San Francisco in the NFC West.
Seattle and New Orleans (7-2) are the only NFC teams yet to lose at home, and the race for the No. 1 overall seed is viewed by many as critical should the two meet up in the playoffs. The Seahawks host the Saints on Dec. 2.