Ganguly, who had stayed back in Lahore to undergo medical tests for his suspect lower back injury sustained during the last One-dayer on Wednesday, joined his teammates but did not attend the practice session.
Team manager Ratnakar Shetty said an MRI scan had revealed no injury but a "clearer picture" would emerge only on Saturday.
"The good news is that the scan has come clean. There is no injury to the skipper. It is only a muscular pain and physio Andrew Leipus will have two more sessions with him," Shetty said.
Asked about the captain's availability for the first Test, he said, "it is too early to say anything at the moment. We will have to wait and see his progress," he said. In case Ganguly is ruled out, Rahul Dravid will captain the side and left-handed batsman Yuvraj Singh is likely to take the skipper's place in the team.