direct antiglobulin test


direct antiglobulin test

Also known as

DAT, Coombes test

Additional information

Blood Transfusion samples must be labelled using BloodTrack generated label or handwritten and signed by the person who identified and bled the patient. Please discuss sample volumes with the Blood Transfusion Laboratory as it may be possible to use a smaller amount for neonates and children who are difficult to bleed. A valid group and save sample may be used for this test.

Sending address

Department of Haematology Camelia Botnar Laboratories Great Ormond Street Hospital Great Ormond Street WC1N 3JH

Laboratory service


Sample requirements

1ml venous blood, EDTA (Blood Transfusion bottle only)

Turnaround time

Up to 24 hours


Upon request

Call in advance?

Not required


The Haematology Department provides a wide range of specialist tests with a special interest in the diagnosis and monitoring of coagulation disorders.

© 2011 Great Ormond Street Hospital for Children NHS Trust