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Direct Antiglobulin Test

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Also known as: DAT; Direct Coombs Test; Direct Anti-human Globulin Test
Formal name: Direct Antiglobulin Test

At a Glance

Why Get Tested?

To help diagnose the cause of hemolytic anemia as caused by autoimmune disease or induced by drugs; to investigate a transfusion reaction; to diagnose hemolytic disease of the newborn

When to Get Tested?

When your doctor wants to find out the cause of your hemolytic anemia; when you have had a blood transfusion recently and are experiencing symptoms of a tranfusion reaction; or when a newborn shows signs of hemolytic disease of the newborn

Sample Required?

A blood sample drawn from a vein in your arm

Test Preparation Needed?