Glossary DAT Abbreviation for “Direct Antiglobulin Test.” Sometimes people say it as if it is a word, but most blood bankers speak it letter by letter instead (“D-A-T”). 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