Direct Antiglobulin Test

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Also known as: DAT; Direct Coombs Test; Direct Anti-human Globulin Test
Formal name: Direct Antiglobulin Test
Related tests: RBC Antibody Screen; Blood Typing; Red Blood Cell Antibody Identification

At a Glance

Why Get Tested?

To help diagnose the cause of haemolytic anaemia as caused by autoimmune disease or induced by drugs; to investigate a transfusion reaction; to diagnose haemolytic disease of the foetus and neonate

When to Get Tested?

When your doctor wants to find out the cause of your haemolytic anaemia; when you have had a blood transfusion recently and are experiencing symptoms of a transfusion reaction; or when a newborn shows signs of haemolytic disease of the foetus and neonate (HDFN).

Sample Required?

The test is performed on a sample of blood obtained from a vein in the arm using a needle. This is a process which may be referred to as ‘venepuncture’.

Test Preparation Needed?