The No. 1 overall draft choice suffered a knee injury in Detroit's Oct. 4 loss at Chicago and sat out last weekend's game against Pittsburgh. Daunte Culpepper had 282 yards passing with a touchdown and an interception in the Lions' 28-20 loss.
Stafford did not practice Monday and Tuesday, took part in individual drills Wednesday and sat out again Thursday.
Coach Jim Schwartz said Thursday that he would let the Lions' injury report "handle where we are with the quarterback."