Porter wasn't allowed to fly to Denver's last game, at San Diego on Oct. 15, after he began experiencing light-headedness and a racing heart - similar to the symptoms he felt before his seizure in August.
Coach John Fox said Porter was "day-to-day."
In the locker room Friday, Porter said he visited doctors Thursday and they told him "everything looked normal," but they want to make sure he's 100 percent healthy before allowing him to play.
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