Glossary IAT Abbreviation for Indirect Antiglobulin Test. Back to Glossary List Transfusion News is brought to you by Increasing Data Available for Plasma Transfusion Indications Blood Donation is Not Associated with Migraine Relief Transfusion Patterns After CAR T-Cell Therapy for Large B-Cell Lymphoma Motivators and Barriers to Donating Blood Among African Americans Stored RBCs May Have Slower Oxygen Unloading for Tissue Visit Transfusion News » Follows Facebook 13.6k Followers