Warnock was collected by Corey Enright with just over a minute to go in the match and was given a free kick and shot at goal from 15m out.
He shanked the kick after taking time to gather himself from the ground, and missed an opportunity to give his side a likely match-winning lead.
The club confirmed on Saturday morning Warnock remained in hospital under observation following the incident but had been cleared of any structural damage.
He will remain admitted until cleared to go home, which is expected to be sometime over the weekend.
On 3AW on Saturday morning, Carlton coach Brett Ratten admitted he hadn't seen Warnock before he went to hospital.
Ratten had been busy collecting statistics the coaches weren't issued with during the game due to a technical issue.
When asked if he thought players should have the option to tell umpires they didn't feel well enough to take such an important kick after such an incident, Ratten was unsure.
"It's an interesting one. I think he thought he was fine, from all reports he was fine, and I think when the siren and everything went, he just became worse," Ratten said.
"Then the doctor just took the precaution and sent him off to hospital."
Ratten confirmed captain Chris Judd would be right for Friday night's clash with Melbourne at the MCG after injuring his ankle in the second quarter.
Judd returned to the field and played mainly in attack for the rest of the game.
He completed the Blues' recovery session at Visy Park on Saturday morning.
"Judd will be fine. He was at rehab this morning and everything is fine, he just got a knock there and he just lost a little bit of his power," Ratten said.
"In the game, we didn't want to put him in stoppages where he'd have to power out.
"At least when he played at half-forward or even at deeper forward, he could at least find space and didn't have to break one tackle, two tackles.
"We just tried to take him out of the congestion a bit."
Ratten also revealed the Blues had been close to making a late change after defender Michael Jamison injured his back during the warm-up.
The Blues were so concerned about the backman, emergency Simon White was warmed up by fitness staff in case he couldn't play.
"I said to the coaches, 'this game is meant to test us. You can prepare all you want but a player can go out and do a bit of a warm up and have a back spasm and the next minute we might be making changes'," Ratten said.
"[Jamison] did it in the warm up. He got a bit tight and then one of the muscles spasmed a little bit but he was fine."
