‘Good Morning America” co-host Robin Roberts returned to the show’s Times Square studios yesterday for an off-camera “test run” in preparation for her planned return in a few weeks.

Roberts, 52, underwent a bone-marrow transplant in September to combat MDS, a rare blood disorder.

The chemotherapy required for the transplant made her lose her hair, and she appeared quite thin yesterday on the set with co-host Lara Spencer.

“What a thrill to be back . . . and see the best folks in the world, my ‘GMA’ family,” Roberts said.