Welcome to the Johns Hopkins Hospital Division of Transfusion Medicine, globally recognized for its exceptional diagnostic and consultation services. The Transfusion Medicine Division within the Department of Pathology includes the Transfusion Medicine Laboratory, Immunogenetics Laboratory, and Apheresis Program: The Hemapheresis and Transfusion Support (HATS).

In close collaboration with the esteemed Johns Hopkins Center for Bloodless Medicine and Surgery, the Division of Transfusion Medicine stands as a beacon of excellence. Trust in our precision and dedication as we continue to deliver unparalleled medical services. Welcome to a realm where expertise meets unwavering commitment.

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Aaron Tobian, M.D., Ph.D.

Faculty SpotLight

Aaron Tobian, M.D., Ph.D.

Aaron Tobian, MD, PhD, is a Professor of Pathology, Medicine, Oncology and Epidemiology at The Johns Hopkins University School of Medicine and Bloomberg School of Public Health. He is also Director of Transfusion Medicine at Johns Hopkins Hospital. Dr. Tobian divides his time between research and clinical service.

Dr. Tobian has been highly involved with the transfusion medicine communit... Read full bio

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USCAP 2024

The 113th annual meetings of the United States and Canadian Academy of Pathology was held in Baltimore this year. This provided a wonderful opportunity for our alumni to visit their “old stomping grounds,” see what has changed, and most importantly, to reunite and share stories.

After a tour of the hospital guided by current residents, 100 alumni, friends, and current residents and faculty, gathered in the Armstrong Teaching Building for drinks and dinner.

The highlight of the evening was an entertaining talk “A short history of Pathology,” by Peter Burger.

Congratulations Castle Connolly Top Docs for 2024

Castle Connolly just announced their “top doctors” for 2024, and three of our faculty are on the list! 2024 Castle Connolly Top Doctors As they describe it, ” Castle Connolly Top Doctors are peer-nominated, and thoroughly vetted by our physician-led research team. These doctors are best-in-class healthcare providers, embodying excellence in clinical care as well as interpersonal skills.”

Congratulations Drs. Pedram Argani, Ralph H. Hruban and Brigitte M. Ronnett!

Congratulations, Carina Friend!

Carina Friend

Carina Friend, a recent Johns Hopkins Hospital Specialist in Blood Bank Technology/Transfusion Medicine Program graduate, has been awarded the 2023 AABB Future Leader Specialist in Blood Bank Scholarship Award for her project, "Intrauterine Transfusion for Hemolytic Disease of the Fetus Secondary to Maternal Red Blood Cell Alloimmunization versus Fetal Anemia of Nonimmune Etiology". This was work that she partnered with Dr. Liz Crowe, Blood Bank and SBB Program Medical Director, and Johns Hopkins Fetal Therapy.

Congratulations Carina!