On Thursday, Suh was publicly apologizing to his teammates after he was ejected from a loss to Green Bay.
It could be several days before Suh finds out the true cost of his third-quarter stomp in Detroit's 27-15 loss to the Packers on Thanksgiving. An NFL spokesman said Friday that plays from Week 12 looked at for potential discipline won't be reviewed until all games are completed.
Suh and the Lions released separate statements on Friday night.
"The on-field conduct exhibited by Ndamukong Suh that led to his ejection from yesterday's game was unacceptable and failed to meet the high level of sportsmanship we expect from our players," the team said. "We have been in contact with Commissioner Goodell's office and were advised that, like any on-field matter, Thursday's incident is subject to review by the League office and that any subsequent discipline would be determined by the League office."
Suh apologized, but not to the player he kicked, Packers offensive lineman Evan Dietrich-Smith.
"In the past few hours, I have had time to reflect on yesterday's game and I want to sincerely apologize for letting my teammates down, the organization, and especially to my fans who look to me for positive inspiration," he said.
"Playing professional sports is not a game. It is a profession with great responsibility, and where performance on and off the field should never be compromised. It requires a calm and determined demeanor, which cannot be derailed by the game, referee calls, fans or other players.
"I want to reiterate my commitment to working to become a better player, and professional — on and off the field. My reaction on Thursday was unacceptable. I made a mistake, and have learned from it. I hope to direct the focus back to the task at hand — by winning."
Fox Sports' officiating expert Mike Pereira: Expect a suspension
Suh was dismissed after tangling with Dietrich-Smith. After being pushed off Dietrich-Smith, Suh stepped down hard with his right foot, appearing to make contact with Dietrich-Smith's right arm.
Suh said he was trying to keep his balance while freeing himself from the brief scuffle. He apologized to teammates, coaches and fans for ''allowing the refs to have an opportunity to take me out of this game,'' but he insisted he didn't intentionally step on anyone.
''People are going to have their own opinions - that's fine,'' he said after the game. ''The only (people) that I really care about are my teammates, my true fans and my coaches and their opinions, and that's where it lies. And honestly, the most important person in this whole thing that I have to deal with is the man upstairs.''
A few members of the Packers called it a "dirty" play, though none went so far as to call Suh a "dirty player."
"He did something foul and dirty, and he got caught," Green Bay's Ryan Pickett said. "He got ejected. They handled that. I saw the end of it. It looked like he tried to kick him."
Added T.J. Lang: "I think it was just the fact, we were up 14-0 at the time, and that's when the chippiness comes out. When a team is losing and they're about to be scored on again, I think that's when a lot of stuff happens. There wasn't really much leading up to that. There were no guys really pushing after the play. I think it was just frustration on his part. We're glad we kept our cool. It certainly helped us that he got thrown out, because he's a good player."
In less than two seasons as a pro, Suh has established himself as one of the game's strongest and most athletic defensive linemen, but he's received his share of fines.
Suh requested and received a meeting earlier this month with Commissioner Roger Goodell to discuss his play. He said that dialogue was helpful, but now the league will have to decide whether more discipline is merited after he was ejected on national television.
New York Jets coach Rex Ryan came up with one tongue-in-cheek solution Friday.
''I'll be honest with you, I think the young man, he should be released ... and come to the Jets,'' Ryan joked. ''I'm just throwing that out there. I don't think he's that good of a player. I don't know about the incident and all that jazz, but we'll take him. We'll sacrifice that way.''
Ryan then turned a little more serious.
''I don't even know what to say on it,'' Ryan said. ''You've seen things like that happen on the field before. It's an emotional game.''
The Packers kept their emotions in check, just like they did when Lang was kicked in the groin by Minnesota's Brian Robison.
"We talked all week about our guys playing with a lot of poise and playing with discipline and keeping their composure, and we reminded them at halftime," Packers offensive coordinator Joe Philbin said on Friday. "We've got a good group of guys, good character guys. That's something that it's probably a better question posed to them than to me. They were the ones that were out there in the heat of the battle, but again, I think you've got to give them credit. They were poised. As you know, typically the second guy is the guy that gets in trouble more than the first guy. You've got to be able to walk away and not get involved in that stuff."
Jets offensive lineman Matt Slauson, who played with Suh at Nebraska, sounded off on the topic Friday.
''Somebody needs to get him under control, because he's trying to hurt people,'' Slauson told the New York Post. ''It's one thing to be an incredibly physical player and a tenacious player, but it's another thing to set out to end that guy's career.''
If Suh is suspended early next week, he would have a chance to keep playing pending any appeal - but that appeals process can be expedited. Detroit plays at New Orleans on Dec. 4.
The NFL moved that game to prime time, a reflection of the buzz surrounding the improved Lions this season. Led by young stars Suh, Matthew Stafford and Calvin Johnson, Detroit won its first five games, but the Lions have since lost four of six.
Defensive backs Louis Delmas, Chris Houston and Brandon McDonald went down with injuries against the Packers, and so did running back Kevin Smith. If the Lions are without Suh for an extended period, it could hurt them in the playoff race.
''He plays aggressive. All of us, sometimes, might overreact in certain situations,'' Detroit defensive lineman Cliff Avril said. ''We've got to play real smart.''
The Packers did have one player ejected on Thursday, Pat Lee, after taking a swing at one of the Lions after being double-teamed and shoved during and following a first-half punt.
"It's one of the toughest things to do on special teams, to get doubled on a punt," special teams coordinator Shawn Slocum said on Friday. "It was a combative play for the entirety of the play, and Pat made a bad decision at the end of it. There's more to the second guy involved, but that's what normally gets called. He made a bad decision."