Robin Roberts gives health update on "GMA" blog

FILE - This Aug. 20, 2012 file photo released by ABC shows co-host Robin Roberts during a broadcast of "Good Morning America," in New York. Roberts has said goodbye to "Good Morning America," but only for a while. The "GMA" anchor made her final appearance Thursday, Aug. 30, before going on medical leave for a bone marrow transplant. Roberts' departure was first planned for Friday, but she chose to exit a day early to visit her ailing mother in Mississippi. In July she first disclosed that she has MDS, a blood and bone marrow disease. She will be hospitalized next week to prepare for the transplant. The donor will be her older sister, Sally-Ann Roberts, who was on hand for Thursday's emotional send-off. (AP Photo/ABC, Donna Svennevik, file)
Donna Svennevik

Robin Roberts says her blood count is "great" following her bone marrow transplant to treat MDS, a blood and bone marrow disease.

The "Good Morning America" co-host filled her fans on the show's blog on Thursday.

"Today is what I like to call 'Thankful Thursday, aka Friday Eve," she wrote. " My bone marrow transplant took place exactly two weeks ago. The only numbers that matter are my blood counts and they are...GREAT! My sister Sally-Ann's stem cells apparently feel right at home in my body - an answer to so many prayers."

Roberts continues to thank her friends and family for support, noting that fellow "GMA" co-hosts Josh Elliott and Sam Champion came to visit.

"I truly FEEL and thank you for your love, prayers and good wishes. And I return it to you tenfold. Light Love Power Presence. XO."

In Roberts' absence, guest co-hosts have been filling her shoes. Ann Romney is scheduled to be stepping in for Roberts as well as Stephen Colbert, Oprah Winfrey and the cast of "Modern Family."