Juventus have confirmed Wojciech Szczesny is "doing well" after the goalkeeper completed an electrocardiogram (ECG) on Thursday night.
Szczesny, 32, had left the pitch in tears and holding his chest during the first leg of Juventus' Europa League quarter-final against Sporting Lisbon.
The alarming incident happened shortly before half-time, when the former Arsenal stopper went down clutching his chest and waved frantically at the Juventus bench for medical attention. The injury did not appear to be caused by contact with another player.