Direct antiglobulin test
| Category | Blood Transfusion |
|---|---|
| Test background |
To detect the presence of IgG antibodies bound to the antigens on the red blood cell surface membrane. |
| Clinical Indications |
To determine if there are any antibodies on the surface of the patient's red cells. Used in the investigation of haemolytic anaemia, a haemolytic transfusion reaction and drug-induced haemolysis. |
| Reference range | Not applicable |
| Sample & container required | EDTA (lavender top) |
| Sample volume | 4 mL for paediatrics 6 mL for adults |
| Turnaround time | Dependent on clinical requirement. Contact the laboratory to discuss further. |
| Notes | May be referred to the NHS Blood and Transplant service for additional testing |