The 26-year-old former first-round pick was examined by doctors after being hospitalized for his injuries, which are not believed to threaten Pierre-Paul's career, the sources said.
A source told ESPN.com that Pierre-Paul has severe burns on his palm and tips of three fingers, and one finger is being tested for nerve damage. He didn't lose any fingers, and doctors believe there will be no permanent damage or disfigurement to his hands.
The injuries stemming from the incident could affect Pierre-Paul's future with the Giants after the pass-rusher enjoyed one of his best seasons as a pro in 2014. The Giants used the franchise tag on the two-time Pro Bowler, but he is yet to sign the $14.8 million tender and is consequently not under contract.