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 sponsored by Carnitine Metabolism Associated with Red Blood Cell Hemolysis No Transfusion-Transmission of Classic Creutzfeldt-Jakob Disease RBC Transfusions Guidelines for Very Preterm Infants Brief: Ferritin-Guided Blood Donations Protect Iron Stores in Donors Donor Deferral Model Evaluates Impact of New Individual Risk Assessment Visit Transfusion News » Follows Facebook 14.6k Followers