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 Monitoring Oxygen Saturation and Hemoglobin Values along with Iron and Erythropoietin Supplementation Reduces RBC Transfusion Frequency Updated FDA Guidance for Blood Donor Eligibility for Blood Pressure and Pulse Carnitine Metabolism Associated with Red Blood Cell Hemolysis No Transfusion-Transmission of Classic Creutzfeldt-Jakob Disease RBC Transfusions Guidelines for Very Preterm Infants Visit Transfusion News » Follows Facebook 14.6k Followers