*Robin Roberts returned to the NYC set of “Good Morning America” this morning for a private trial run to see if she’s physically ready to resume her co-hosting duties.

It was her first visit to the show since undergoing a bone marrow transplant in September. Last week, Roberts explained that she would be doing a series of doctor-approved “dry runs” before officially re-joining the show.

“My doctors want me to see how many people I actually come in contact with,” Roberts said. “How my body reacts to the stimulation, that’s code word for stress, of being in the studio environment.”

She added, “My skin is very sensitive and so we have to see how it reacts to the studio lights. My vision is still a little blurry from the treatment. All of this is getting better day by day so that is the next step.”

In June, 51-year-old Roberts was diagnosed with MDS — or myelodysplastic syndrome — a disease of the blood and bone marrow that was once known as preleukemia. In late December, Roberts, a breast cancer survivor, celebrated the crucial 100-day benchmark from her bone marrow transplant to treat the MDS. The transplant was a five-minute procedure in which the donor cells from Robin’s sister, Sally-Ann, were injected into Robin’s system through a syringe.

Since the transplant her doctors have been tracking her recovery and monitoring her weakened immune system to ensure that it is successfully acclimating to the new bone marrow. Her doctors have called her recovery strong.

“What we know now is that can’t see any of the disease that prompted this whole process right now,” her oncologist, Dr. Gail Roboz, of the New York-Presbyterian Hospital-Weill Cornell Medical Center said on “GMA” last week.  “That’s really, that’s what we were looking for. She is doing wonderfully. There are many patients who at this point after a transplant are not at all having a conversation about going back to work, let alone the type of work that she does, so we are thrilled that she’s doing so well.”

The “GMA” anchor made a special appearance in December at the New York City wedding of her “GMA” colleague Sam Champion to Rubem Robierb. Roberts played a part in the nuptials, reading a poem by Elizabeth Barrett Browning.

Roberts, who has been on medical leave from “GMA” since Aug. 30, said in a statement this morning, “What a thrill to be back at ‘GMA”s Times Square Studio this morning and see the best folks in the world, my ‘GMA’ family. I can’t wait to get back to the anchor chair in a few weeks.”